tref[9], pert[6], trep[6], nerp[5], rent[5], tern[5], tren[5],
pfe[8], fet[8], tef[8], fen[7], nef[7], ref[7], pet[5], nep[4], pen[4], per[4], rep[4], net[4], ten[4], ret[4], ter[4], ner[3], ren[3],
ef[6], fe[6], pe[3], et[3], te[3], en[2], er[2], re[2],
