C123132112322333121111113121111331333133313231333112331113213122321   >>    C12313211232233312111111312111133133313331323133311233111321312232   <<    C123132112322333121111113121111331333133313231333112331113213122323   >>      C123132112322333121111113121111331333133313231333112331113213122322   >>