B3311331313231311331322331333132313132313331323223313232212323132313231111   >>    B331133131323131133132233133313231313231333132322331323221232313231323111   <<    B3311331313231311331322331333132313132313331323223313232212323132313231113   >>      B3311331313231311331322331333132313132313331323223313232212323132313231112   >>