cent[7], derb[6], erbt[6], bett[6], nerd[4], ernt[4], nett[4], rett[4], tret[4],
cer[6], erb[5], bet[5], den[3], end[3], der[3], erd[3], red[3], ern[3], ren[3], net[3],
ne[2], er[2], re[2], et[2],
