- Letter:
AllA(18)B(15)C(17)D(10)E(16)F(46)G(15)H(12)I(10)J(4)K(7)L(9)M(44)N(12)O(4)P(14)R(10)S(19)T(15)More
- Operating System:
AllWindows XP(16)Windows Vista(16)Windows 7(16)Windows 8(16)Windows 10(16)Windows 2000(16)Windows Server 2003(16)Windows Server 2008(16)Windows Server 2012(16)Windows Server 2016(16)macOS(16)Linux(16)Android(16)iOS(16)