B3311331313231311331322331333132333133313132233133313233313231323123221   >>    B331133131323131133132233133313233313331313223313331323331323132312322   <<    B3311331313231311331322331333132333133313132233133313233313231323123223   >>      B3311331313231311331322331333132333133313132233133313233313231323123222   >>