beru[8], bure[8], erbu[8], zebu[8], burz[8], brze[6], zebr[6], zeru[6],
bru[7], bur[7], buz[7], bzu[7], ber[5], erb[5], reb[5], bez[5], zer[3],
bu[6], be[4], er[2], re[2], ez[2], ze[2],
