cure[7], freu[7], rufe[7], ufer[7], ufre[7], teuf[7], furt[7], ruft[7], turf[7], reut[4], rute[4], treu[4],
cer[6], ruf[6], cut[6], reu[3], ure[3], tue[3],
er[2], re[2], et[2], ur[2], tu[2],
