B3311331313231311331322331333132313331322331323133313231323123232232311   >>    B331133131323131133132233133313231333132233132313331323132312323223231   <<    B3311331313231311331322331333132313331322331323133313231323123232232313   >>      B3311331313231311331322331333132313331322331323133313231323123232232312   >>