B3311331313231311331322331333132313231333133313311211113313232321312311   >>    B331133131323131133132233133313231323133313331331121111331323232131231   <<    B3311331313231311331322331333132313231333133313311211113313232321312313   >>      B3311331313231311331322331333132313231333133313311211113313232321312312   >>