kirrt[8], girrt[6], grits[6], irrst[5], sirrt[5],
kirr[7], kirs[7], kris[7], girr[5], grit[5], sirr[4], irrt[4], rist[4],
kir[6], ski[6], gis[4], irr[3], sir[3], ist[3],
si[2], ti[2], st[2],