che[6], ech[6], hec[6], hep[6], het[6], hen[5], cep[5], hes[5], pet[5], pst[5], cen[4], cne[4], nep[4], pen[4], ces[4], sep[4], pss[4], net[4], ten[4], set[4], tss[4], sen[3],
eh[4], he[4], ce[3], pe[3], et[3], te[3], ts[3], en[2], es[2], se[2],