ferie[9], refie[9], repie[6], reper[6],
efie[8], fere[8], free[8], efir[8], peri[5],
pfe[8], pif[8], fee[7], ref[7], frr[7], pie[4], per[4], rep[4], prr[4], rei[3],
ef[6], fe[6], fi[6], pe[3], pi[3], ee[2], er[2], re[2],
