B3311331313231311331322331333132313231333133313311211113311212111113223321   >>    B331133131323131133132233133313231323133313331331121111331121211111322332   <<    B3311331313231311331322331333132313231333133313311211113311212111113223323   >>      B3311331313231311331322331333132313231333133313311211113311212111113223322   >>