C31231211113313112133313331311331333133313331333133312111133132313232212111   >>    C3123121111331311213331333131133133313331333133313331211113313231323221211   <<    C31231211113313112133313331311331333133313331333133312111133132313232212113   >>      C31231211113313112133313331311331333133313331333133312111133132313232212112   >>