C123132112322333121111113121111331333133313231333133322213312121223322211   >>    C12313211232233312111111312111133133313331323133313332221331212122332221   <<    C123132112322333121111113121111331333133313231333133322213312121223322213   >>      C123132112322333121111113121111331333133313231333133322213312121223322212   >>