- Letter:
AllA(18)B(15)C(18)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(19)Windows Vista(19)Windows 7(19)Windows 8(19)Windows 10(19)Windows 2000(19)Windows Server 2003(19)Windows Server 2008(19)Windows Server 2012(19)Windows Server 2016(19)macOS(19)Linux(19)Android(19)iOS(19)