B3311331313231311331322331333132333133313223331211331333133313221211111333131   >>    B331133131323131133132233133313233313331322333121133133313331322121111133313   <<    B3311331313231311331322331333132333133313223331211331333133313221211111333133   >>      B3311331313231311331322331333132333133313223331211331333133313221211111333132   >>