Excel formula for generating all possible combos from 4 columns of data

[MExcelClt]

Hi everyone,
I'm writing an online learning activity for students, and I need to generate all possible combinations from 4 columns of data. A colleague sent me a formula for combining 3 columns of data. I've tried altering the formula, but it's not generating all of the possible combos. I'm not an Excel guru, so I'm not sure where I'm going wrong.
If anyone can help, the data that I need to combine are as follows:

Column 1:
cat
dog
mouse

Column 2:
cat
dog
mouse

Column 3:
cat
dog
mouse

Column 4:
cat
dog
mouse

Thanks in advance!

 

[mikerickson]

If your data is in A1:D3 of your spreadsheet

put =INDEX(A$1:A$3), 1 + MOD(INT((ROW(A1)-1)/(3^(COLUMN(A1)-1))),3), 0)

in a cell and drag it right 4 columns and down 81 rows

 

[MExcelClt]

If your data is in A1:D3 of your spreadsheet

put =INDEX(A$1:A$3), 1 + MOD(INT((ROW(A1)-1)/(3^(COLUMN(A1)-1))),3), 0)

in a cell and drag it right 4 columns and down 81 rows

Thanks for responding. When I paste the formula in a cell, I'm getting an error: "You've entered too few arguments for this function."
Any thoughts?

 

[mikerickson]

I put the parenthesis in the wrong place
=INDEX(A$1:A$3, 1 + MOD(INT((ROW(A1)-1)/(3^(COLUMN(A1)-1))),3), 1)

 

[MExcelClt]

I put the parenthesis in the wrong place
=INDEX(A$1:A$3, 1 + MOD(INT((ROW(A1)-1)/(3^(COLUMN(A1)-1))),3), 1)

That did the trick. Thanks!