C312312111133131212111133133313231333133313223313233311232313223311   >>    C31231211113313121211113313331323133313331322331323331123231322331   <<    C312312111133131212111133133313231333133313223313233311232313223313   >>      C312312111133131212111133133313231333133313223313233311232313223312   >>