B3311331313231311331322331333132313233313232321333132313231323311   >>    B331133131323131133132233133313231323331323232133313231323132331   <<    B3311331313231311331322331333132313233313232321333132313231323313   >>      B3311331313231311331322331333132313233313232321333132313231323312   >>