- 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(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)