buce[9], beru[8], bure[8], erbu[8], boru[8], buro[8], obce[7], obco[7], ceru[7], bero[6], ober[6], boro[6], robo[6], euro[6], cero[5], orce[5], coro[5], oreo[4],
buc[8], obu[7], bru[7], bur[7], cob[6], ecu[6], cru[6], ber[5], erb[5], reb[5], bor[5], rob[5], oru[5], cer[4], ero[3], oro[3],
bu[6], be[4], bo[4], ce[3], co[3], eo[2], er[2], re[2], or[2], ro[2],
