The sample space has the following 9 outcomes, with the corresponding products:

Outcome Product
(1,1) 1
(1,2) 2
(1,3) 3
(2,1) 2
(2,2) 4
(2,3) 6
(3,1) 3
(3,2) 6
(3,3) 9

There are 36 units of probability mass, you can pick any subset of the outcome column to its probability by summing the corresponding products in the product column, and dividing by 36.