fora[8], fair[7], frau[7], rauf[7], aura[4],
für[11], ufo[7], auf[6], ruf[6], roi[4], aar[3], ara[3], air[3], rai[3], aua[3], rau[3],
fa[5], aa[2], ai[2], ar[2], au[2], ui[2], ur[2],
