fehn[8], heft[8], fenn[7], fern[7], ehrt[5], renn[4], tenn[4], ernt[4],
feh[7], ehr[4], her[4], reh[4], rhe[4], ern[3], ren[3], net[3],
eh[3], he[3], ne[2], er[2], re[2], et[2],
