B3311331313231311331322331333132333131323132313231333133313232233111   >>    B331133131323131133132233133313233313132313231323133313331323223311   <<    B3311331313231311331322331333132333131323132313231333133313232233113   >>      B3311331313231311331322331333132333131323132313231333133313232233112   >>