C31231211113313121211113313331333133313311211331333133313331321123311   >>    C3123121111331312121111331333133313331331121133133313331333132112331   <<    C31231211113313121211113313331333133313311211331333133313331321123313   >>      C31231211113313121211113313331333133313311211331333133313331321123312   >>