B33113313132313113313223313331323132313331313232233131333133313231322123311   >>    B3311331313231311331322331333132313231333131323223313133313331323132212331   <<    B33113313132313113313223313331323132313331313232233131333133313231322123313   >>      B33113313132313113313223313331323132313331313232233131333133313231322123312   >>