B3311331313231311331322331333132313231333133313311212121111132323221   >>    B331133131323131133132233133313231323133313331331121212111113232322   <<    B3311331313231311331322331333132313231333133313311212121111132323223   >>      B3311331313231311331322331333132313231333133313311212121111132323222   >>