C123132112322333121111113121111331333133313331123313113112133132232221   >>    C12313211232233312111111312111133133313331333112331311311213313223222   <<    C123132112322333121111113121111331333133313331123313113112133132232223   >>      C123132112322333121111113121111331333133313331123313113112133132232222   >>