C123132112322333121111113121111331333133313231333232323221312211121   >>    C12313211232233312111111312111133133313331323133323232322131221112   <<    C123132112322333121111113121111331333133313231333232323221312211123   >>      C123132112322333121111113121111331333133313231333232323221312211122   >>