All combinations of 1,3,5,6,and 7. Just like normal dice, except here apparently there are 5 faces and the numbering is different.
(f,s) = (first die, second die)
(1,1), (1,3), (1,5), (1,6), (1,7),
(3,1), (3,3), . . .
(6,6), (6,7)
If you want the possible sums, just add the two numbers.