>>50343753It's straight up brute force. Take one item and then place it on the 25x12 in all possible ways that you can. And stack for all the items.
Pic related is for one item. It should look pretty much the same for 2 and 3 items.
Now for multiple items I still do brute force which for an exponential problem like this is terrible but easy to code. For 2 items there's 32^2/2 mini simulations than need to run. It must be y=x symmetric.
The advice still is center first then sides.