C312312111133131212111133133313231333133313331333131333132323311   >>    C31231211113313121211113313331323133313331333133313133313232331   <<    C312312111133131212111133133313231333133313331333131333132323313   >>      C312312111133131212111133133313231333133313331333131333132323312   >>