rude[7], puer[7], repu[7], durr[7],
dup[7], pud[7], edu[6], ued[6], dur[6], rud[6], urd[6], rur[5], der[4], red[4], per[4], rep[4], drr[4], prr[4],
ud[5], de[3], pe[3], er[2], re[2],
