B3311331313231311331322331333132313231333133313311211111322331211   >>    B331133131323131133132233133313231323133313331331121111132233121   <<    B3311331313231311331322331333132313231333133313311211111322331213   >>      B3311331313231311331322331333132313231333133313311211111322331212   >>