C2221333133313331311233132313331333133313331311233133313311232123221   >>    C222133313331333131123313231333133313331333131123313331331123212322   <<    C2221333133313331311233132313331333133313331311233133313311232123223   >>      C2221333133313331311233132313331333133313331311233133313311232123222   >>