che[6], ech[6], hec[6], gem[6], hem[6], gen[5], hen[5], erg[5], her[5], cen[4], cne[4], men[4], nem[4], cer[4], mer[4], rem[4], ner[3], ren[3],
hm[5], eh[4], he[4], ce[3], em[3], me[3], en[2], er[2], re[2],