B3311331313231311331322331333132333133313132233133313231331123111   >>    B331133131323131133132233133313233313331313223313331323133112311   <<    B3311331313231311331322331333132333133313132233133313231331123113   >>      B3311331313231311331322331333132333133313132233133313231331123112   >>