IF I’m reading you correctly- you have a pair of speakers, and a pair of subs, one sub dedicated to each speaker.
If so, you need a speaker wire to to each speaker, and a speaker wire to each sub. The sub may have two inputs ( two positive, two negative), but you’ll only be using one set of them. There are usually two high level inputs on the back because often only a single sub is used, and it’s a convenient way to get both left and right signals inputted.
If this is the case, reply back and it’s all pretty straightforward to explain.