feuer[8], feure[8], freue[8], ufere[8], rufer[8], eurer[5],
efeu[7], freu[7], rufe[7], ufer[7], ufre[7], euer[4], eure[4], reue[4],
fee[6], ruf[6], ree[3], reu[3], ure[3],
er[2], re[2], ur[2],
