C31231211113313121211113313331333133313331213331333133321123123232321   >>    C3123121111331312121111331333133313331333121333133313332112312323232   <<    C31231211113313121211113313331333133313331213331333133321123123232323   >>      C31231211113313121211113313331333133313331213331333133321123123232322   >>