B3311331313231311331322331333132313231333133313311221211111333132233111   >>    B331133131323131133132233133313231323133313331331122121111133313223311   <<    B3311331313231311331322331333132313231333133313311221211111333132233113   >>      B3311331313231311331322331333132313231333133313311221211111333132233112   >>