Is it possible to relate multiple parent products to a set of child products?

[RedLobster999]

I am planning to make a printed T-shirt store.So I would sell different prints but they all would be printed on the same standard child products ie. S-black, M-black, L-black.

However, It seems that oscar doesn't support this. So in oscar when I try to create a new parent(different print eg. unicorn print), I also have to create its own child eg. unicorn-S-black, unicorn-M-black, unicorn-L-black. Is there anywhere I can add a new print and connect it to the existing set of child products??? so whenever I add a new print(eg. horse, unicorn, einstein), I can just connect the new print to the existing child products ie. S-black, M-black, L-black.???

Thank you.