Quoting downstream values ​​in Stata using forvalues

So this works as expected:

. forvalues i = 1(1)3 {
  2. di `i'
  3. }

      

        
        
        
      

    

1
  2
  3

And it is not:

. forvalues i = 3(1)1 {
  2. di `i'
  3. }
           <--- that an empty line that returns from the above loop.

      

        
        
        
      

    

If I want to create

3
2
1

      

        
        
        
      

    

Do I really need this to be explored?

. forvalues i = 1(1)3 {
  2. di 3+1-`i'
  3. }

      

        
        
        
      

    

Why?