C312312111133131212111133133313231333132311331333133313221211332321   >>    C31231211113313121211113313331323133313231133133313331322121133232   <<    C312312111133131212111133133313231333132311331333133313221211332323   >>      C312312111133131212111133133313231333132311331333133313221211332322   >>