Hello,
 
I'd like to generate automatically all the possible combinations of a set of 8 variables (there are 535, too many to do it by hand). For example:
 
input: varA, varB, varC
output: varA+varB+varC
            varA+varB
            varA+varC
            varB+varC
            varA
            varB
            varC
Is there any function that produces this option?
 
Thank you
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