正

1. noun, takes の (logical) true; regular
2. numeral 10^40; ten duodecillion
3. noun, takes の, abbreviation original
4. mathematics positive; greater than zero
5. noun, philosophy thesis (in dialectics)

しょう

1. prefix, before a number exactly; precisely
2. takes の, noun, archaic correct; right; true
3. noun, prefix, archaic, also じょう greater (of equal court ranks); upper; senior
4. noun, archaic director (highest of the four administrative positions of the ritsuryō period); chief

まさ

1. noun, na-adjective, archaic exact; precise