bud[8], bru[7], bur[7], edu[6], ued[6], dur[6], rud[6], urd[6], dwu[6], ber[5], erb[5], reb[5], web[5], der[4], red[4], rew[3], wre[3],
bu[6], ud[5], be[4], wu[4], de[3], er[2], re[2], ew[2], we[2],
