for the art form, can we have "quick-acting" and "long-acting" for each form/code?

I.e.:

1 = Tablet/capsule
1.1 = Long-acting
1.2 = Quick-acting
2 = Syrup/Suspension
2.1 = Long-acting
2.2 = Quick-acting
3 = Combination of 1 and 2
3.1 = Long-acting
3.2 = Quick-acting
4 = Powder
4.1 = Long-acting
4.2 = Quick-acting
5 = Subcutaneous
5.1 = Long-acting
5.2 = Quick-acting
6 = Intravenous
6.1 = Long-acting
6.2 = Quick-acting
7 = Intramuscular
7.1 = Long-acting
7.2 = Quick-acting

or should it maybe be a sub table to art_form?