C312312111133131212111133133313231333133313331323221211332233312311   >>    C31231211113313121211113313331323133313331333132322121133223331231   <<    C312312111133131212111133133313231333133313331323221211332233312313   >>      C312312111133131212111133133313231333133313331323221211332233312312   >>