bisy[7], bosy[7], byss[7], ibis[6], bios[6], bosi[6], boss[6], sosy[5], ossi[4],
boy[6], oby[6], boi[5], obi[5], bis[5], osy[4], osi[3], sio[3], soi[3], sos[3],
by[5], bi[4], bo[4], ii[2], si[2], os[2],
