B3311331313231311331322331333132313331322132333133313231323132313223332321   >>    B331133131323131133132233133313231333132213233313331323132313231322333232   <<    B3311331313231311331322331333132313331322132333133313231323132313223332323   >>      B3311331313231311331322331333132313331322132333133313231323132313223332322   >>