aura[6], urea[6], rusa[6], sura[6], usra[6], ruse[6], sure[6], arsa[4], rasa[4], sera[4],
aua[5], aur[5], esu[5], rus[5], sur[5], aaa[3], ara[3], era[3], rea[3], asa[3], ars[3], ras[3], sra[3], ser[3],
au[4], su[4], aa[2], ar[2], er[2], re[2], as[2], es[2], se[2],
