rusy[7], rysu[7], sury[7], euro[6], ruse[6], sure[6], suro[6], sery[5], rosy[5], ryso[5], eros[4],
oru[5], esu[5], sou[5], rus[5], sur[5], ery[4], esy[4], osy[4], rys[4], ero[3], ser[3], ros[3],
su[4], eo[2], er[2], re[2], or[2], ro[2], es[2], se[2], os[2],
