C123132112322333121111113121111331333133313231333133311223323211122322111   >>    C12313211232233312111111312111133133313331323133313331122332321112232211   <<    C123132112322333121111113121111331333133313231333133311223323211122322113   >>      C123132112322333121111113121111331333133313231333133311223323211122322112   >>