C312312111133113313231333133313331333133313331333133313123122311   >>    C31231211113311331323133313331333133313331333133313331312312231   <<    C312312111133113313231333133313331333133313331333133313123122313   >>      C312312111133113313231333133313331333133313331333133313123122312   >>