Question: Print several objects without comma?

Dear everyone,

 

  I have a weird question about the "print" command. Suppose I have somthing like

 

f1:=x^2;
f2:=x^3;
f3:=x^4;
print(f1,f2,f3);

 

 It will print

 

  Is there any option that allows me to erase that comma, namely print

  X^2 x^3 x^4

 

Thank you very much in advance

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