C22212323232133313113313331333132313231333132311233123311231322111   >>    C2221232323213331311331333133313231323133313231123312331123132211   <<    C22212323232133313113313331333132313231333132311233123311231322113   >>      C22212323232133313113313331333132313231333132311233123311231322112   >>