C31231211111133131211113313231333133313331333133313133313331333133313221211211   >>    C3123121111113313121111331323133313331333133313331313331333133313331322121121   <<    C31231211111133131211113313231333133313331333133313133313331333133313221211213   >>      C31231211111133131211113313231333133313331333133313133313331333133313221211212   >>