derer[5], ruder[5], rudre[5], eurer[5],
erde[4], rede[4], euer[4], eure[4], reue[4],
der[3], erd[3], red[3], ree[3], dur[3], reu[3], ure[3],
er[2], re[2], du[2], ud[2], ur[2],
