B3311331313231311331322331333132333133313223331211331333133313221121132311   >>    B331133131323131133132233133313233313331322333121133133313331322112113231   <<    B3311331313231311331322331333132333133313223331211331333133313221121132313   >>      B3311331313231311331322331333132333133313223331211331333133313221121132312   >>