obu[7], bru[7], bur[7], abo[5], boa[5], oba[5], arb[5], bar[5], rab[5], bor[5], rob[5], aur[5], oru[5], aro[3], ora[3],
bu[6], ba[4], bo[4], au[4], ar[2], or[2], ro[2],
