B33113313132313113313223313331323133313223313231333133313232222233231322121   >>    B3311331313231311331322331333132313331322331323133313331323222223323132212   <<    B33113313132313113313223313331323133313223313231333133313232222233231322123   >>      B33113313132313113313223313331323133313223313231333133313232222233231322122   >>