- Letter:
AllA(16)B(29)C(11)D(6)E(7)F(41)G(19)H(9)I(5)J(2)K(5)L(6)M(50)N(13)O(3)P(32)Q(6)R(5)S(54)More
- Operating System:
AllWindows 95(7)Windows 98(7)Windows Me(7)Windows 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)Mac OS Classic(7)macOS(9)Linux(9)Android(9)iOS(9)