ster[5], tres[5], sire[4], ssie[4], sers[4],
ret[4], ter[4], itr[4], tir[4], tri[4], set[4], sit[4], tss[4], rei[3], eis[3], sie[3], ser[3], sir[3],
et[3], te[3], ts[3], er[2], re[2], es[2], se[2], si[2],
