che[6], ech[6], hec[6], hel[6], cel[5], cle[5], lec[5], hen[5], her[5], cen[4], cne[4], len[4], cer[4], ner[3], ren[3],
eh[4], he[4], ce[3], el[3], en[2], er[2], re[2],
