buf[11], fob[9], ufa[9], ufo[9], caf[8], buc[8], obu[7], cab[6], cob[6], abo[5], boa[5], oba[5], aua[5],
fu[8], uf[8], fa[6], bu[6], ba[4], bo[4], au[4], co[3], aa[2],