C123132112322333121111113121111331333133313231333232323222212211111   >>    C12313211232233312111111312111133133313331323133323232322221221111   <<    C123132112322333121111113121111331333133313231333232323222212211113   >>      C123132112322333121111113121111331333133313231333232323222212211112   >>