C2221333133313331311233132313331333132313231311331333132313221122233121   >>    C222133313331333131123313231333133313231323131133133313231322112223312   <<    C2221333133313331311233132313331333132313231311331333132313221122233123   >>      C2221333133313331311233132313331333132313231311331333132313221122233122   >>