Let me explain what I am trying to do.

I have 3 monomers called A, B, C.

When I want to connect them in the build copolymer tool I wish to have B as my main compound, so A and C should be both connected to B, so lets put B in the middle of the 3 monomers, however when I want to add more chains it happens that A joins C which it was the last monomer, but that is not what I want, otherwise I want to have A connected to B, then B connected to C but next B connected to C and A connected to B, and again B connected to C and A to B and C to B and so on. I will attach a picture of what I want to make it clear. Please take a look of it.

In the image you will see 3 bead of different colors, pretty much what I want is that B is connected to C twice (such as having a chain -B-C-B-C-B-C-B-C-) and a bead A is connected to B also all along the chain, so among A and C there is no connection at all. A would be like hanging from B in the bottom all chain long).

I would like to know this because imagine that I want a repetition ABC of 100 units, it would so tough to make it one by one by one all hundred times, so I am pretty sure there should be a way that I don' t know that just by telling the software somehow that connects the monomers (ABC) in a copolymer 100 times and does it exactly the way I am expecting, this will help me a lot when working also with coarse-grained molecules. Well thanks a lot if someone is able to help me out on this.