beru[8], bure[8], erbu[8], boru[8], buro[8], puer[7], repu[7], poru[7], bero[6], ober[6], euro[6], ruro[6], oper[5], pero[5],
pub[8], obu[7], bru[7], bur[7], opu[6], ber[5], erb[5], reb[5], bor[5], rob[5], brr[5], oru[5], rur[5], per[4], rep[4], por[4], pro[4], rop[4], prr[4], ero[3],
bu[6], be[4], bo[4], pe[3], op[3], po[3], eo[2], er[2], re[2], or[2], ro[2],
