aft[8], taf[8], fet[8], tef[8], efa[7], arf[7], far[7], raf[7], ref[7], ate[4], eta[4], rat[4], tar[4], tra[4], ret[4], ter[4], era[3], rea[3],
fa[6], ef[6], fe[6], at[3], ta[3], et[3], te[3], ar[2], er[2], re[2],
