eche[7], hece[7], chen[7], cher[7], herc[7], henr[6], erce[5],
che[6], ech[6], hec[6], ehe[5], hen[5], her[5], cen[4], cne[4], cer[4], ner[3], ren[3],
eh[4], he[4], ce[3], ee[2], en[2], er[2], re[2],
