pech[8], eche[7], hece[7], chen[7],
che[6], ech[6], hec[6], hep[6], ehe[5], cek[5], hen[5], cep[5], cen[4], cne[4], nep[4], pen[4],
eh[4], he[4], ce[3], pe[3], ee[2], en[2],
