The instructions do not say that each category (R, S, and T) must be selected from.
Also, I am assuming that multiple combos of the above will also work?
0-3-3 (and 3-0-3)
1-2-3 (and 2-1-3 & 3-1-2)
and in the case of 2-0-4, that is the only arrangement that will work with those numbers given the rules.
NOTE: For all the above, the number combinations correspond to R, S, T respectively.
