choi[7], codo[6], ciot[6], cito[6], tico[6], ooid[5],
chi[6], ich[6], hoc[6], och[6], hit[6], hot[6], cod[5], doc[5], hoi[5], oho[5], dit[5], doi[4], ido[4], odo[4], toi[4], oto[4],
hi[4], ho[4], oh[4], ci[3], id[3], co[3], do[3], od[3], ot[3], to[3],
