buca[9], baca[7], caba[7], baco[7], coba[7], obca[7], caca[6],
buź[15], buc[8], obu[7], cab[6], cob[6], abo[5], boa[5], oba[5], aua[5],
bu[6], ba[4], bo[4], au[4], co[3], aa[2],
