bobo[8], hobo[8], kobo[7], obok[7], boks[7], boso[6], koso[5], osok[5],
bob[7], bok[6], oho[5], oko[4], kos[4], sok[4], oso[3],
bo[4], ho[4], oh[4], ko[3], ok[3], os[2],
