Bar Chart Question

Hi,

I am new to this forum and to stata so I apologize if this question is too simple and poorly written -

I currently have a categorical variable called "var" that equals either 1, 2 or 3. I have another categorical variable called "cat" that can equal 1,2,3,4. I want to make a bar chart that displays the percentages of var = 1, var = 2 and var = 3 with respect to each value of "cat". In other words, this bar chart would be grouped with respect to cat = 1, cat = 2, cat =3, cat = 4 and bars representing the percentages of var = 1, var = 2, var = 3 for each value of "cat"

I hope this question makes sense, thanks