cent[7], gern[5], engt[5], regt[5], nerd[4], ernt[4],
cer[6], eng[4], gen[4], erg[4], ger[4], reg[4], den[3], end[3], der[3], erd[3], red[3], ern[3], ren[3], net[3],
ne[2], er[2], re[2], et[2],
