How to check a few values ​​of the variable operator if?

Hello! I work on a large project. But I will explain my question on a different example ...

Suppose I need to create a program that only knows how to get out of his temper)

but the user can write “output”, “output”, “Vyhod”, “Exit”, “Exit” or “DS [jl” ”(on the layout. 'Latin'), etc.

Then the code would look something like this

  vyhod =  input  ()   if  vyhod == :  expt ( 0 )   if  vyhod == :  expit ( 0 )   if  vyhod ==  '`` `` `` `Span>:  Exit ( 0 )     
 and so on ... 
  
 So, how can this be reduced. For example, I tried to do it like: 
  
   if> vyhod == , , :  exit ( 0 ) r  
  
 and so 
  
  if  vyhod == ; ; :  exit (
                            

                                
                                    

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