febr[10], refu[10], fezu[10], beru[8], bure[8], erbu[8], frez[8], zebu[8], burz[8], brze[6], zebr[6], zeru[6],
buf[11], bub[9], fru[9], fur[9], ruf[9], ref[7], bru[7], bur[7], fez[7], buz[7], bzu[7], ber[5], erb[5], reb[5], bez[5], zer[3],
fu[8], uf[8], ef[6], fe[6], bu[6], be[4], er[2], re[2], ez[2], ze[2],
