C123132112322333121111113121111331333133313231333232323222221211   >>    C12313211232233312111111312111133133313331323133323232322222121   <<    C123132112322333121111113121111331333133313231333232323222221213   >>      C123132112322333121111113121111331333133313231333232323222221212   >>