- Letter:
AllA(25)B(21)C(24)D(14)E(9)F(19)G(22)H(16)I(12)J(5)K(8)L(27)M(24)N(17)O(6)P(17)Q(7)R(12)S(27)More
- Operating System:
AllWindows XP(9)Windows Vista(9)Windows 7(9)Windows 8(9)Windows 10(9)Windows 2000(9)Windows Server 2003(9)Windows Server 2008(9)Windows Server 2012(9)Windows Server 2016(9)macOS(9)Linux(9)Android(8)iOS(9)