- Letter:
AllA(18)B(13)C(15)D(9)E(11)F(47)G(15)H(10)I(10)J(3)K(7)L(8)M(42)N(10)O(3)P(14)R(18)S(16)T(12)More
- Operating System:
AllWindows XP(7)Windows Vista(7)Windows 7(7)Windows 8(7)Windows 10(7)Windows 2000(7)Windows Server 2003(7)Windows Server 2008(7)Windows Server 2012(7)Windows Server 2016(7)macOS(7)Linux(7)Android(7)iOS(7)