- 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(4)Windows Vista(4)Windows 7(4)Windows 8(4)Windows 10(4)Windows 2000(4)Windows Server 2003(4)Windows Server 2008(4)Windows Server 2012(4)Windows Server 2016(4)macOS(4)Linux(4)Android(4)iOS(4)