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Naming Schemes

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A good naming scheme is scalable, unique, and easy to remember. The purpose of these naming schemes is to name networked servers, wireless access points or client computers, but it can also be used to name projects, products, variables, streets, pets, kids, or any other project where unique names and rememberable names are required.

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Operating Systems

  • GNU/Linux
  • GNU HURD
  • Microware OS-9
  • Solaris
  • SunOS
  • HP-UX
  • AIX
  • OpenVMS
  • Mac OS
  • MINIX
  • FreeBSD
  • NetBSD
  • OpenBSD
  • DragonFly
  • Plan 9
  • FreeDOS
  • Caldera OpenDOS
  • Novell DOS
  • DR-DOS
  • PC-DOS
  • BeOS
  • QNX
  • AROS
  • OS/2
  • AtheOS
  • SkyOS
  • Syllable
  • Visopsys
  • ReactOS
  • Menuet
  • AmigaOS
  • AmigaDOS
  • IRIX
  • SINIX
  • BSD/OS
  • Ultrix
  • TRS-DOS (TRS-80)
  • ProDOS (Apple ][e)
  • DOS3.3 (Apple ][)
  • CP/M (as used prior to the IBM PC - ie KayPro, Osborne)
  • Unix
  • Multics
  • OS/360
  • MVS
  • RiscOS
  • NeXTStep
  • Microsoft DOS

List of Windows operating systems

Personal computer versions

In this section, a client version of Windows is a version that end-users or OEMs can install on personal computers, including desktop computers, laptops and workstations.

Name Version Release date Codename Additional information Editions
Windows 1.0x
Windows 1.00 1.00 November 6, 1985 Interface Manager First release of Windows N/A
Windows 1.01 1.01 November 20, 1985
Windows 1.02 1.02 May 14, 1986
Windows 1.03 1.03 August 21, 1986
Windows 1.04 1.04 April 10, 1987
Windows 1.05 1.05 August 21, 1987
Windows 2.0x
Windows 2.00 2.00 December 9, 1987 N/A
Windows 2.01 2.01
Windows 2.02 2.02
Windows 2.03 2.03
Windows 2.04 2.04
Windows 2.1x
Windows 2.1 2.1 May 27, 1988
  • Windows/286
  • Windows/386
  • Windows/486
Windows 2.11 2.11 March 13, 1989
Windows 3.0x
Windows 3.00 3.00 May 22, 1990 N/A
Windows for Workgroups 3.0
Windows 3.01 3.01 October 20, 1991 Sometimes called Windows Graphical Environment with Multimedia Extensions 1.0
Windows for Workgroups 3.01
Windows 3.1x
Windows 3.1 3.1 April 6, 1992 Janus N/A
Windows for Workgroups 3.1 3.1 October 1992 Kato, Sparta
Windows 3.11 3.11 November 8, 1993 Janus
Windows for Workgroups 3.11 3.11 August 11, 1993 Snowball
Windows 3.2 3.2 November 22, 1993 Janus Chinese version of Windows 3.1x
Windows for Workgroups 3.2 3.2 December 1993 Cougar Chinese version of Windows for Workgroups 3.1x
Windows 9x
Windows 95 4.0 August 24 ,1995 Chicago
  • Windows 95
  • Windows 95 Service Pack 1 (December 31, 1995)
  • Windows 95 Service Pack 1.1 (February 14, 1996)
  • Windows 95 Service Pack 2 (August 24, 1996)
  • Windows 95 USB Supplement to Service Pack 2 (August 27, 1997)
  • Windows 95 Service Pack 2.1 (August 27, 1997)
  • Windows 95 Service Pack 2.5 (November 26, 1997)
Windows 96 4.1 May 3, 1996 Cleveland, Nashville N/A
Windows 98 4.2 June 21, 1998 Memphis
  • Windows 98 First Edition
  • Windows 98 Second Edition (April 23, 1999)
Windows Me 4.9 September 14, 2000 Millennium N/A
Windows NT
Windows NT 3.1 NT 3.1 July 27, 1993 AXP NT version of Windows 3.1
  • Windows NT 3.1 Workstation
Windows NT for Workgroups 3.1 Razzle NT version of Windows for Workgroups 3.1 N/A
Windows NT 3.11 NT 3.11 January 24, 1994 NT OS/2 NT version of Windows 3.11.
  • Windows NT 3.11 Workstation
Windows NT for Workgroups 3.11 October 8, 1993 Razzle NT version of Windows for Workgroups 3.11. N/A
Windows NT 3.2 NT 3.2 1994 NT 3.2 NT version of Windows 3.2 or Chinese version of Windows NT 3.11.
  • Windows NT 3.2 Workstation
Windows 3.5 NT 3.5 September 21, 1994 Daytona
  • Windows 3.5 Workstation
Windows 3.51 NT 3.51 May 30, 1995
  • Windows 3.51 Workstation
Windows NT 4.0 NT 4.0 August 24, 1996 Shell Update Release
  • Windows NT 4.0 Workstation
Windows NT 5.0 NT 5.0 February 17, 2000 Memphis, NT 5.0
  • Windows NT 5.0 Workstation
Windows 2000 Memphis
  • Windows 2000 Professional
Windows XP NT 5.1 October 25, 2001 Whistler
  • Windows XP Starter
  • Windows XP Home Basic
  • Windows XP Home Premium
  • Windows XP Professional
  • Windows XP 64-bit Edition
  • Windows Fundamentals for Legacy PCs (July 8, 2006)
Windows XP Professional x64 Edition NT 5.2 April 25, 2005 N/A N/A
Windows Vista NT 6.0 January 30, 2007 Longhorn
  • Windows Vista Starter
  • Windows Vista Home Basic
  • Windows Vista Home Premium
  • Windows Vista Professional
  • Windows Vista Business
  • Windows Vista Enterprise
  • Windows Vista Ultimate
Windows 7 NT 6.1 October 22, 2009 Blackcomb, Vienna, Seven
  • Windows 7 Starter
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Professional
  • Windows 7 Enterprise
  • Windows 7 Ultimate
  • Windows Thin PC
Windows 7.1 NT 6.11 February 22, 2011 Chicago
  • Windows 7.1 Starter
  • Windows 7.1 Home Basic
  • Windows 7.1 Home Premium
  • Windows 7.1 Professional
  • Windows 7.1 Enterprise
  • Windows 7.1 Ultimate
  • Windows 7.1 Thin PC
Windows 8 NT 6.2 October 26, 2012 Jupiter, Eight
  • Windows 8
  • Windows 8 Professional
  • Windows 8 Enterprise
  • Windows 8 OEM
Windows 8.1 NT 6.3 October 17, 2013 Blue
  • Windows 8.1
  • Windows 8.1 Professional
  • Windows 8.1 Enterprise
  • Windows 8.1 OEM
  • Windows 8.1 with Bing
Windows 10 NT 10.0 2015 Threshold
  • Windows 10 Home Edition
  • Windows 10 Professional
  • Windows 10 Professional Education
  • Windows 10 Professional for Workstations
  • Windows 10 Enterprise
  • Windows 10 Enterprise LTSC (formerly LTSB)
  • Windows 10 Education
  • Windows 10 IoT Core
  • Windows 10 IoT Enterprise
  • Windows 10 S (now an operational mode within Enterprise and Education)

Server versions

Name Version Release date Codename Additional information Editions
Windows NT 3.1 NT 3.1 July 27, 1993 AXP NT version of Windows 3.1
  • Windows NT 3.1 Server
  • Windows NT 3.1 Advanced Server
Windows NT 3.11 NT 3.11 1993 NT OS/2 NT version of Windows 3.11
  • Windows NT 3.11 Server
  • Windows NT 3.11 Advanced Server
Windows NT 3.2 NT 3.2 1994 NT 3.2 NT version of Windows 3.2 or Chinese version of Windows NT 3.11
  • Windows NT 3.2 Server
  • Windows NT 3.2 Advanced Server
Windows 3.5 NT 3.5 September 20, 1994 Daytona
  • Windows 3.5 Server
Windows 3.51 NT 3.51 May 29, 1995
  • Windows 3.51 Server
Windows NT 4.0 NT 4.0 July 29, 1996 Shell Update Release
  • Windows NT 4.0 Server
  • Windows NT 4.0 Enterprise Server
  • Windows NT 4.0 Terminal Server
Windows NT 5.0 NT 5.0 February 17, 2000 Memphis, NT 5.0
  • Windows NT 5.0 Server
  • Windows NT 5.0 Advanced Server
  • Windows NT 5.0 Datacenter Server
Windows Server 2000 Memphis Server, Server 5
  • Windows Server 2000
  • Windows Advanced Server 2000
  • Windows Datacenter Server 2000
Windows Server 2003 NT 5.2 April 24, 2003 Whistler Server
  • Windows Standard Server 2003
  • Windows Enterprise Server 2003
  • Windows Datacenter Server 2003
  • Windows Web Server 2003
  • Windows Storage Server 2003
  • Windows Small Business Server 2003
Windows Server 2003 R2 December 6, 2005 Whistler Server R2
  • Windows Standard Server 2003 R2
  • Windows Enterprise Server 2003 R2
  • Windows Datacenter Server 2003 R2
  • Windows Web Server 2003 R2
  • Windows Storage Server 2003 R2
  • Windows Small Business Server 2003 R2
  • Windows Compute Cluster Server 2003
  • Windows Home Server
Windows Server 2008 NT 6.0 February 27, 2008 Longhorn Server
  • Windows Standard Server 2008
  • Windows Enterprise Server 2008
  • Windows Datacenter Server 2008
  • Windows Server 2008 for Itanium-based Systems
  • Windows Foundation Server 2008
  • Windows Essential Business Server 2008
  • Windows HPC Server 2008
  • Windows Small Business Server 2008
  • Windows Storage Server 2008
  • Windows Web Server 2008
Windows Server 2008 R2 NT 6.1 October 22, 2009 Longhorn Server R2, Server 7
  • Windows Foundation Server 2008 R2
  • Windows Standard Server 2008 R2
  • Windows Enterprise Server 2008 R2
  • Windows Datacenter Server 2008 R2
  • Windows Server 2008 R2 for Itanium-based Systems
  • Windows Web Server 2008 R2
  • Windows Storage Server 2008 R2
  • Windows HPC Server 2008 R2
  • Windows Small Business Server 2010
  • Windows Home Server 2010
  • Windows MultiPoint Server 2010
Windows Server 2008 R3 NT 6.11 October 22, 2011 Longhorn Server R3, Server 7.1
  • Windows Foundation Server 2008 R3
  • Windows Standard Server 2008 R3
  • Windows Enterprise Server 2008 R3
  • Windows Datacenter Server 2008 R3
  • Windows Server 2008 R3 for Itanium-based Systems
  • Windows Web Server 2008 R3
  • Windows Storage Server 2008 R3
  • Windows HPC Server 2008 R3
  • Windows Small Business Server 2011
  • Windows MultiPoint Server 2011
  • Windows Home Server 2011
Windows Server 2012 NT 6.2 September 4, 2012 Server 8
  • Windows Foundation Server 2012
  • Windows Essentials Server 2012
  • Windows Standard Server 2012
  • Windows Datacenter Server 2012
  • Windows MultiPoint Server 2012
Windows Server 2012 R2 NT 6.3 October 17, 2013 Server Blue, Server 8.1
  • Windows Foundation Server 2012 R2
  • Windows Essentials Server 2012 R2
  • Windows Standard Server 2012 R2
  • Windows Datacenter Server 2012 R2
  • Windows MultiPoint Server 2012 R2
Windows Server 2016 NT 10.0 October 12, 2016 Threshold Server
  • Windows Essentials Server 2016
  • Windows Standard Server 2016
  • Windows Datacenter Server 2016
Windows Server 2019 November 13, 2018 Redstone Server
  • Windows Essentials Server 2019
  • Windows Standard Server 2019
  • Windows Datacenter Server 2019

Device versions

Appliances

Name Version Release date An edition of Additional information Sold with
Windows XP Media Center Edition NT 5.1/NT 5.2 2001, 2002, 2003, 2004, 2005, and 2006 Windows XP Home theater PCs, network attached storage (NAS) and set-top boxes
Windows XP Tablet PC Edition NT 5.1 November 2002 Microsoft Tablet PC
Windows RT NT 6.2 October 26, 2012 Windows 8 ARM-based tablet computers
Windows RT 8.1 NT 6.3 October 18, 2013 Windows 8.1

Mobile devices

Mobile devices include smartphones, handheld tablet computers, and personal digital assistants

  • Windows 10
    • Windows 10 Mobile
    • Windows 10 Mobile Enterprise
    • Windows 10 IoT Mobile
    • Windows 10 IoT Mobile Enterprise
  • Windows Phone
    • Windows Phone 8.1
    • Windows Phone 8
    • Windows Phone 7.8
    • Windows Phone 7.5
    • Windows Phone 7.1
    • Windows Phone 7
  • Windows Mobile
    • Windows Mobile 6.5
    • Windows Mobile 6.1
    • Windows Mobile 6.0
    • Windows Mobile 5.1
    • Windows Mobile 5.0
    • Windows Mobile 2003 Third Edition
    • Windows Mobile 2003 Second Edition
    • Windows Mobile 2003
    • Pocket PC 2002
    • Pocket PC 2001
    • Pocket PC 2000

Embedded devices

  • Windows Embedded
    • Windows Embedded 8.1
    • Windows Embedded 8
    • Windows Embedded 7.1
    • Windows Embedded 7
    • Windows Embedded Automotive
    • Windows Embedded Industry
    • Windows Embedded 2009
    • Windows XP Embedded
    • Windows 2000 Embedded
    • Windows NT 5.0 Embedded
    • Windows NT 4.0 Embedded – Abbreviated NTe, it is an edition of Windows NT 4.0 that was aimed at computer-powered major appliances, vending machines, ATMs and other devices that cannot be considered computers per se. It is the same system as the standard Windows NT 4.0, but it comes packaged in a database of components and dependencies, from which a developer can choose individual components to build customized setup CDs and hard disk boot images. Windows NT 4.0 Embedded includes Service Pack 5. Before 1998, it used to be called Windows NT 4.1.
  • Windows Embedded Compact
    • Windows Embedded Compact 2013
    • Windows Embedded Compact 7.1
    • Windows Embedded Compact 7
    • Windows Embedded CE 6.1 (2007)
    • Windows Embedded CE 6.0 (2006)
    • Windows CE 5.1 (2006), with a version for smartphones and PDAs sold as Windows Mobile 5.1
    • Windows CE 5.0 (2005), with a version for smartphones and PDAs sold as Windows Mobile 5.0
    • Windows CE 4.3 (2005), with a version for smartphones and PDAs sold as Windows Mobile 2003 TE
    • Windows CE 4.2 (2004), with a version for smartphones and PDAs sold as Windows Mobile 2003 SE
    • Windows CE 4.1 (2003), with a version for smartphones and PDAs sold as Windows Mobile 2003
    • Windows CE 4.0 (2002), with a version for smartphones and PDAs sold as Pocket PC 2002
    • Windows CE 3.1 (2001), with a version for smartphones and PDAs sold as Pocket PC 2001
    • Windows CE 3.0 (June 2000), with a version for smartphones and PDAs sold as Pocket PC 2000
    • Windows CE 2.13 (January 2000)
    • Windows CE 2.12 (August 1999)
    • Windows CE 2.11 (October 1998)
    • Windows CE 2.1 (July 1998)
    • Windows CE 2.0 (September 1997)
    • Windows CE 1.0 (November 1996)

Canceled versions

  • Windows Odyssey – a version intended to be an update to the Microsoft Windows NT 5.x codebase. The teams working on Neptune and Odyssey combined to work on Windows XP.
  • Windows Mobile 7 or Photon - originally a successor of Windows Mobile, it had been scrapped for Windows Phone 7 with Metro UI.
  • Windows Neptune (December 27, 1999) – the first planned version of Microsoft Windows NT to have a consumer edition variant, based on the Windows 2000 codebase. A version was sent out to testers but was never released.
  • Windows Triton (2001) – a planned successor to Windows Neptune.
  • Windows NT 4.1 (1997) – former name of Windows NT 4.0 Embedded.
  • Windows Cairo (February 29, 1996) – a "true object-oriented OS", planned after Windows NT 4.0.
  • Windows 4.0 (1995) – former name of Windows 95.
  • Windows 4.1 (1996) – former name of Windows 96.
  • Windows 4.2 (1998) – former name of Windows 98.
  • Windows 4.9 (2000) – former name of Windows Me.
  • Windows 5 (1999) – former name of both Windows NT 5.0 and Windows 2000.
  • Windows 2001 (2001) and Windows 5.1 (2001) – former names of Windows XP.
  • Windows 6 (2006) – former name of Windows Vista.
  • Windows 8.2 (2014) and Windows 9 (2014) – former names of Windows 10. The last build of Windows 9 is 9883.

Windows codenames

Windows 3.1x/9x

Codename Preliminary name Final name Notes
Janus Windows 3.1, Windows 3.11, and Windows 3.2
Kato (Winball), Sparta (Jastro) Windows for Workgroups 3.1
Snowball (LB) Windows for Workgroups 3.11
Cougar Windows for Workgroups 3.2 Same codename as Windows Small Business Server 2008
Chicago 9x (95 Pre-Release) Windows 4.0 Windows 95 Same codename as Windows 7.1
O'Hare Internet Explorer, first shipped in Microsoft Plus! for Windows 95 O'Hare is the main airport for the city of Chicago.
Frosting Microsoft Plus! for Windows 95
Detroit Windows 95 Service Pack 2
Cleveland, Nashville Windows 4.1 Windows 96
Memphis Windows 4.2, Windows 97 Windows 98 The codename was the key to activating an easter egg in Windows 98:
  • open the "Date and Time" control panel;
  • go to the "Timezone" page;
  • hold the Control key and drag a line with the mouse cursor from Memphis, Egypt (or maybe Cairo, the codename of Windows NT 4 - the map is too small to tell) to Memphis, Tennessee. Still holding the Control key, drag another line from Memphis to Redmond, Washington;
  • a window opens with the credits for Windows 98.
Dolly Windows 98 OEM/Corporate image cloning utility Dolly refers to Dolly the Sheep, the first sheep to be cloned.
Millennium Windows 4.9 Windows Me Me stands for Millennium Edition

Windows NT family

Codename Preliminary name Final name Notes
AXP Windows NT 3.1
Razzle Windows NT for Workgroups 3.1, Windows NT for Workgroups 3.11
NT OS/2 OS/2 3.0 Windows NT 3.11
NT 3.2 Windows NT 3.2
Daytona Windows 3.5x
Cairo N/A Never released.
SUR (Shell Update Release) Windows NT 4.0 Microsoft originally planned for NT 4.0 to be just a simple "Shell Update Release" to integrate the Windows 95 GUI with Windows 3.51's kernel.
Wolfpack Microsoft Cluster Server
Hydra Terminal Services, Terminal Server Windows NT 4.0 Terminal Server Terminal Server adds "multithreading" support to Windows (the ability to run multiple instances of the graphics subsystem), and the Lernaean Hydra is a mythological monster with multiple heads.
Impala Windows NT 4.1 Windows NT 4.0 Embedded
Memphis, NT 5.0 Windows NT 5.0
Memphis Windows 5 Windows 2000 Same codename as Windows 98
Memphis Server, Server 5 Windows NT 5.0 Server, Windows Server 2000
Asteroid Windows NT 5.0 Service Pack 1 Windows 2000 Service Pack 1
Janus Windows NT 5.0 64-bit Windows 2000 64-bit Same codename as Windows 3.1
Odyssey N/A Ideas project, merged to Whistler.
Neptune N/A Ideas project, merged to Whistler.
Whistler Windows 5.1, Windows 101, Windows 2001, Windows .NET 2001, Windows NT XP Windows XP Merge of Whistler build 2202, Neptune and Project Odyssey. Named after Whistler, British Columbia, where design retreats were held.
Mantis Windows XP Embedded
Creekside Windows XP Starter
Trident Windows XP Media Center Edition
eHome Windows XP Media Center Edition 2002
Freestyle Windows XP Media Center Edition 2003 Name of a terrain rating system in the Whistler-Blackcomb resort.
Harmony Windows XP Media Center Edition 2004 Name of a ski lift and alpine bowl in Whistler, British Columbia.
Symphony Windows XP Media Center Edition 2005 Name of an alpine bowl in Whistler, British Columbia.
Emerald Windows XP Media Center Edition 2006 Name of a ski lift in Whistler, British Columbia.
Trainyard Windows XP Service Pack 1 Trainyard was an engineering package of driver updates to ship simultaneously with Windows XP Service Pack 1, the most major of which was support for USB 2.0 which was also ported backwards to Windows 2000.
Springboard Windows XP Service Pack 2 Name of a ski run on Blackcomb in Whistler, British Columbia.
Whistler Server Windows XP Server, Windows .NET Server, Windows Server 2002 Windows Server 2003 One of many unrelated Microsoft projects of the time to carry a ".NET" designation. See: Microsoft .NET.
Bobcat Windows Small Business Server 2003 Bobcat is a ski-run on Whistler Mountain.
Whistler Server R2 Windows Server 2005 Windows Server 2003 R2
Eiger Windows Fundamentals for Legacy PCs Software Assurance program. The Eiger is a mountain in the Bernese Oberland in Switzerland. The Eiger is part of a trio of mountains, The Eiger, The Mönch and The Jungfrau.
Mönch Windows Mobile 6 VPN-s and advanced IP (Internet Protocol) security. The Mönch is a mountain in the Bernese Oberland in Switzerland. The Mönch is part of a trio of mountains, The Eiger, The Mönch and The Jungfrau.
Longhorn Windows 6 Windows Vista Went gold (RTM) on 8 of November 2006. Named after the Longhorn Bar in the Whistler-Blackcomb resort; initially planned as an "interim release" between "Whistler" and "Blackcomb" (which was "Vienna" and is now Windows 7).
Q, Quattro Windows Home Server Announced at CES 2007. Original project codename was "Quattro" because it was the leader of the project's 4th attempt at building a home server at Microsoft. Renamed to Q once the project moved out of incubation stage.
Cougar Windows Longhorn Small Business Server Windows Small Business Server 2008 Same codename as Windows for Workgroups 3.2. Cougar is a ski-run on Whistler Mountain.
Longhorn Server, Server 6 Windows Server 2007 Windows Server 2008 In development. Planned server equivalent of Windows Vista to be released in 2008.
Blackcomb, Vienna, Seven Windows 7 Originally codenamed "Blackcomb" after the Whistler-Blackcomb resort. Renamed to "Vienna" in January 2006.
Longhorn Server R2, Server 7 Windows Server 2009 Windows Server 2008 R2 In development. Planned "mid-size" (25-500 PC) edition of Longhorn Server.[1].
Chicago NT (Windows 7.1 Pre-Release) Windows 7.1 Same codename as Windows 95
Longhorn Server R3, Server 7.1 Windows Server 2010 Windows Server 2008 R3
Vail Windows Home Server 2011
Jupiter, Eight Windows 8
Server 8 Windows Server 2012
Metro Windows 8 Style UI Renamed from Metro because of a lawsuit with the German Metro company
Blue Windows 8.1
Server Blue, Server 8.1 Windows Server 2013 Windows Server 2012 R2
Threshold Windows 9 Windows 10
Threshold 2 Windows 10 November Update
Threshold Server Windows Server 2015 Windows Server 2016
Redstone Windows 10 Anniversary Update Redstone is a mineral and item in Minecraft, a game product by Mojang and Microsoft bought it in 2015
Redstone 2 Windows 10 Creators Update
Redstone 3 Windows 10 Fall Creators Update
Redstone 3 Server Windows Server version 1709
Redstone 4 Windows 10 Spring Creators Update Windows 10 April 2018 Update
Redstone 4 Server Windows Server version 1803
Redstone 5 Windows 10 October 2018 Update
Redstone 5 Server Windows Server 2016 R2 Windows Server 2019, Windows Server version 1809
19H1 Windows 10 May 2019 Update
19H1 Server Windows Server version 1903
19H2 Windows 10 19H2
19H2 Server Windows Server 19H2
20H1 Windows 10 20H1
20H1 Server Windows Server 20H1

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By Number


A good naming scheme should be scalable, but there could be times when a fixed number of machines are only ever going to be used. These are dedicated to those machines.

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By Letter

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