C31231211113313121211113313331323133313331333133313331121211111333132212231   >>    C3123121111331312121111331333132313331333133313331333112121111133313221223   <<    C31231211113313121211113313331323133313331333133313331121211111333132212233   >>      C31231211113313121211113313331323133313331333133313331121211111333132212232   >>