C312312111133131212111133133313231333133313331333131211111133133313232321331   >>    C31231211113313121211113313331323133313331333133313121111113313331323232133   <<    C312312111133131212111133133313231333133313331333131211111133133313232321333   >>      C312312111133131212111133133313231333133313331333131211111133133313232321332   >>