B3311331313231311331322331333132333132322131133133313231323132333111   >>    B331133131323131133132233133313233313232213113313331323132313233311   <<    B3311331313231311331322331333132333132322131133133313231323132333113   >>      B3311331313231311331322331333132333132322131133133313231323132333112   >>