B3311331313231311331322331333132313231333131323223313231323132322123311   >>    B331133131323131133132233133313231323133313132322331323132313232212331   <<    B3311331313231311331322331333132313231333131323223313231323132322123313   >>      B3311331313231311331322331333132313231333131323223313231323132322123312   >>