B3311331313231311331322331333132313132313331323223313231333132322211231111   >>    B331133131323131133132233133313231313231333132322331323133313232221123111   <<    B3311331313231311331322331333132313132313331323223313231333132322211231113   >>      B3311331313231311331322331333132313132313331323223313231333132322211231112   >>