C1111133313331323223313331333133313331333231333121111331312323231   >>    C111113331333132322331333133313331333133323133312111133131232323   <<    C1111133313331323223313331333133313331333231333121111331312323233   >>      C1111133313331323223313331333133313331333231333121111331312323232   >>