C13223313311212111133133313331333133313233212121111331312323231   >>    C1322331331121211113313331333133313331323321212111133131232323   <<    C13223313311212111133133313331333133313233212121111331312323233   >>      C13223313311212111133133313331333133313233212121111331312323232   >>