core[8], cour[8], ober[7], robe[7], cure[7], bure[6], euro[5], roue[5],
boy[15], bey[14], bye[14], rye[12], beo[6], cer[6], bor[6], erb[5], reu[3], ure[3],
ey[11], ob[5], er[2], re[2], ur[2],
