afer[8], safe[8], fars[8], sfer[8], sera[4], sers[4],
efa[7], arf[7], far[7], raf[7], ref[7], fas[7], fes[7], era[3], rea[3], ars[3], ras[3], sra[3], ser[3], sas[3],
fa[6], ef[6], fe[6], ar[2], er[2], re[2], as[2], es[2], se[2],
