elf[8], fen[7], nef[7], fes[7], che[6], ech[6], hec[6], hel[6], cel[5], cle[5], lec[5], hen[5], hes[5], cen[4], cne[4], len[4], ces[4], sen[3],
ef[6], fe[6], eh[4], he[4], ce[3], el[3], en[2], es[2], se[2],
