pfe[8], pif[8], fen[7], nef[7], fin[7], ref[7], frr[7], pie[4], nep[4], pen[4], nip[4], pin[4], pni[4], per[4], rep[4], prr[4], nie[3], rei[3], ner[3], ren[3], inr[3],
ef[6], fe[6], fi[6], pe[3], pi[3], en[2], in[2], ni[2], er[2], re[2],
