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Windows 1 was released
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Windows 2 was released
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Windows 2.1 is released
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Windows 3.0 is released
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Windows 3.1 is released
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Windows 95 is released
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Windows 98 is released
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Windows 2000 is released
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Windows ME is released
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Windows XP is released
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Windows Vista is released
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Windows 7 is released
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Windows 8 is released
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Windows 8.1is released
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Windows 10 is released