first system to rank officials into 12 levels (603 CE)
crown, best, peerless
カン / かんむり
rank, grade, throne, crown, about, some
イ / くらい
ten
ジュウ / とお
two, two radical (no. 7)
ニ / ふた
storey, stair, counter for storeys of a building
カイ / きざはし