- Letter:
AllA(22)B(19)C(22)D(12)E(8)F(18)G(12)H(14)I(11)J(6)K(7)L(11)M(21)N(15)O(5)P(15)Q(4)R(11)S(24)More
- Operating System:
AllWindows 95(16)Windows 98(16)Windows Me(16)Windows XP(16)Windows Vista(16)Windows 7(16)Windows 8(16)Windows 10(16)Windows 2000(16)Windows Server 2003(16)Windows Server 2008(16)Windows Server 2012(16)Windows Server 2016(16)Mac OS Classic(16)macOS(16)Linux(16)Android(16)iOS(16)