C111123313331323113313331313331333132313331322121111133311211311   >>    C11112331333132311331333131333133313231333132212111113331121131   <<    C111123313331323113313331313331333132313331322121111133311211313   >>      C111123313331323113313331313331333132313331322121111133311211312   >>