chen[7], henn[6], lenn[5],
che[6], ech[6], hec[6], bel[6], ble[6], hel[6], cel[5], cle[5], lec[5], ben[5], hen[5], cen[4], cne[4], len[4],
be[4], eh[4], he[4], ce[3], el[3], en[2],
