brud[9], burd[9], beru[8], bure[8], erbu[8], berd[7], debr[7], rude[7], durr[7],
bud[8], bru[7], bur[7], edu[6], ued[6], dur[6], rud[6], urd[6], ber[5], erb[5], reb[5], brr[5], rur[5], der[4], red[4], drr[4],
bu[6], ud[5], be[4], de[3], er[2], re[2],
