duru[9], urdu[9], runu[8], endu[7], rude[7], rund[7], renu[6], uren[6], dren[5], nerd[5],
udu[8], edu[6], ued[6], dnu[6], nud[6], dur[6], rud[6], urd[6], nur[5], run[5], urn[5], den[4], end[4], der[4], red[4], ner[3], ren[3],
uu[6], ud[5], nu[4], de[3], en[2], er[2], re[2],
