hobo[8], hoyo[7], bosy[7], szyb[7], boso[6],
boy[6], oby[6], hoy[6], bzy[6], hyz[6], oho[5], osy[4], ozy[4], zys[4], oso[3], zoo[3],
by[5], bo[4], ho[4], oh[4], os[2], oz[2],