bido[7], biot[7], bito[7],
bid[6], bod[6], bit[6], hit[6], bot[6], hot[6], boi[5], obi[5], hoi[5], dit[5], tit[5], doi[4], ido[4], toi[4],
bi[4], hi[4], bo[4], ho[4], oh[4], id[3], do[3], od[3], ot[3], to[3],
