ciot[6], cito[6], tico[6], coro[5], trio[5], troi[5], root[5], roto[5], toro[5],
toi[4], oto[4], itr[4], tir[4], tri[4], ort[4], rot[4], tor[4], roi[3], oro[3],
ci[3], co[3], ot[3], to[3], or[2], ro[2],
