B3311331313231311331322331333132313231333133313311221323223332311   >>    B331133131323131133132233133313231323133313331331122132322333231   <<    B3311331313231311331322331333132313231333133313311221323223332313   >>      B3311331313231311331322331333132313231333133313311221323223332312   >>