B3311331313231311331322331333132313231333133313311211111333133313221121111   >>    B331133131323131133132233133313231323133313331331121111133313331322112111   <<    B3311331313231311331322331333132313231333133313311211111333133313221121113   >>      B3311331313231311331322331333132313231333133313311211111333133313221121112   >>