. . "quaternary numeral system" . . "quaternary games" . "4" . "Quaternary numeral system" . . . . "Quinary numeral system" . . "\\\"quaternary\\\"" . "quaternary" . . . . "Quaternary" . . "base4" . "Quaternary numeral system" . "base-4 representation" . "base-4" . . "base 4" . .