kiṃ: what? (m.) ko = who? (f.) kā = which woman? (nt.) kiṃ = what thing? (rel. or inter. pron.)
often with su in dubitative question(의심적 질문): kiŋ sū' dha vittaŋ purisassa seṭṭhaŋ what then, is the best treasure of man in this world? Sn 181
or with nu: kiŋ nukho what is it then (in series evañ nukho, nanukho, kathaŋ nukho)