worb[9], werb[8], ober[7], robe[7], bure[6], euro[5], roue[5],
wob[8], web[7], beo[6], bor[6], erb[5], brr[5], wer[5], reu[3], ure[3],
ob[5], wo[5], er[2], re[2], ur[2],
