pfe[8], fen[7], nef[7], efo[7], fon[7], hep[6], hop[6], hen[5], nep[4], pen[4], eon[3], one[3],
ef[6], fe[6], eh[4], he[4], ho[4], oh[4], pe[3], op[3], po[3], en[2], eo[2], no[2], on[2],
