C22212323232133313113313331333132313231333132322123323333121211   >>    C2221232323213331311331333133313231323133313232212332333312121   <<    C22212323232133313113313331333132313231333132322123323333121213   >>      C22212323232133313113313331333132313231333132322123323333121212   >>