buce[9], bury[9], beru[8], bure[8], erbu[8], ceru[7], bery[7], erby[7], cery[6],
buc[8], bru[7], bur[7], ecu[6], cru[6], bry[6], ryb[6], ber[5], erb[5], reb[5], cer[4], ery[4],
bu[6], by[5], be[4], ce[3], er[2], re[2],
