C31231211113313121211113313331323133313331333133313331121133221311   >>    C3123121111331312121111331333132313331333133313331333112113322131   <<    C31231211113313121211113313331323133313331333133313331121133221313   >>      C31231211113313121211113313331323133313331333133313331121133221312   >>