berku[10], breku[10], burek[10], berek[8], rebek[8], eurek[8],
beku[9], ubek[9], bruk[9], beru[8], bure[8], erbu[8], brek[7], keru[7], reku[7], rebe[6], erek[5],
buk[8], kub[8], bru[7], bur[7], bek[6], kur[6], bee[5], ber[5], erb[5], reb[5], ker[4], rek[4],
bu[6], ku[5], be[4], ee[2], er[2], re[2],
