C312312111133131212111133133313231333133313331323221211111133113231   >>    C31231211113313121211113313331323133313331333132322121111113311323   <<    C312312111133131212111133133313231333133313331323221211111133113233   >>      C312312111133131212111133133313231333133313331323221211111133113232   >>