B33113313132313113313223313331323132333132322123223313133311311   >>    B3311331313231311331322331333132313233313232212322331313331131   <<    B33113313132313113313223313331323132333132322123223313133311313   >>      B33113313132313113313223313331323132333132322123223313133311312   >>