bub[9], bud[8], bus[7], edu[6], ued[6], dwu[6], bee[5], esu[5], web[5], suw[5], des[4], ewe[3], swe[3],
bu[6], ud[5], be[4], su[4], wu[4], de[3], ee[2], es[2], se[2], ew[2], we[2],
