C1231321123223331211111131211113313331333133311233131131121322313221   >>    C123132112322333121111113121111331333133313331123313113112132231322   <<    C1231321123223331211111131211113313331333133311233131131121322313223   >>      C1231321123223331211111131211113313331333133311233131131121322313222   >>