B3311331313231311331322331333132233131133132233133313231333132233132313232311   >>    B331133131323131133132233133313223313113313223313331323133313223313231323231   <<    B3311331313231311331322331333132233131133132233133313231333132233132313232313   >>      B3311331313231311331322331333132233131133132233133313231333132233132313232312   >>