eche[7], hece[7], hele[7], chen[7], cele[6], elce[6],
che[6], ech[6], hec[6], hel[6], ehe[5], cel[5], cle[5], lec[5], hen[5], lee[4], cen[4], cne[4], len[4],
eh[4], he[4], ce[3], el[3], ee[2], en[2],
