B3311331313231311331322331333132313231333133313311221211111333132313232321   >>    B331133131323131133132233133313231323133313331331122121111133313231323232   <<    B3311331313231311331322331333132313231333133313311221211111333132313232323   >>      B3311331313231311331322331333132313231333133313311221211111333132313232322   >>