C2221333133313331311233132313331333133313232123313331323221231211   >>    C222133313331333131123313231333133313331323212331333132322123121   <<    C2221333133313331311233132313331333133313232123313331323221231213   >>      C2221333133313331311233132313331333133313232123313331323221231212   >>