netu[7], retu[7], teru[7], nurt[7], renu[6], uren[6], rent[5], tern[5], tren[5],
nut[6], rut[6], tur[6], nur[5], run[5], urn[5], net[4], ten[4], ret[4], ter[4], ner[3], ren[3],
tu[5], ut[5], nu[4], et[3], te[3], en[2], er[2], re[2],
