irbis[7], siorb[7], sorii[5],
brio[6], broi[6], robi[6], ibis[6], bios[6], bosi[6], rosi[4],
boi[5], obi[5], bor[5], rob[5], bis[5], roi[3], osi[3], sio[3], soi[3], sir[3], ros[3],
bi[4], bo[4], ii[2], or[2], ro[2], si[2], os[2],
