C312312111133131212111133133313331333133312133313231333132213232233133322311   >>    C31231211113313121211113313331333133313331213331323133313221323223313332231   <<    C312312111133131212111133133313331333133312133313231333132213232233133322313   >>      C312312111133131212111133133313331333133312133313231333132213232233133322312   >>