cech[8], chce[8], pech[8], obce[7], echo[7], heco[7],
che[6], ech[6], hec[6], cob[6], hoc[6], och[6], hep[6], hop[6], cep[5],
be[4], eh[4], he[4], bo[4], ho[4], oh[4], ce[3], co[3], pe[3], op[3], po[3], eo[2],
