C1231321123223331211111131211113313331333133311233131131121321223321   >>    C123132112322333121111113121111331333133313331123313113112132122332   <<    C1231321123223331211111131211113313331333133311233131131121321223323   >>      C1231321123223331211111131211113313331333133311233131131121321223322   >>