riasa[5], siara[5], arsie[5], rasie[5], seria[5], serii[5],
aria[4], arie[4], arii[4], asie[4], siei[4], arsa[4], rasa[4], sera[4], rias[4], sari[4], siar[4], sire[4],
ara[3], era[3], rea[3], air[3], rai[3], rei[3], asa[3], ais[3], sia[3], eis[3], sie[3], ars[3], ras[3], sra[3], ser[3], sir[3],
aa[2], ii[2], ar[2], er[2], re[2], as[2], es[2], se[2], si[2],
