Filter Groups

here an image of the components and an outline over each of them : filters (A), contexts (B) and groups (C)

AND

each context must return different products (here an image of (clothing + qty 1) + (hoodies + qty 1))

the order of the contexts in the group do not matter, each context will select different items and when constrained by a quantity, items will be prioritized by cheapest or most exp. depending on the offer.