cab[6], ach[6], cha[6], che[6], ech[6], hec[6], cob[6], hoc[6], och[6], abo[5], boa[5], oba[5], hao[5], oho[5],
ba[4], be[4], ha[4], eh[4], he[4], bo[4], ho[4], oh[4], ce[3], co[3], eo[2],
