fair[7], fier[7], frei[7], reif[7], rief[7], aare[4], arie[4],
fei[6], eia[3], aar[3], ara[3], are[3], air[3], rai[3], ire[3],
fa[5], aa[2], ai[2], ei[2], ar[2], er[2], re[2],
