It wasn't immediately obvious that the correct solution was 3 instructions and not 4, but I'm glad it was, because grab-tape-grab-drop solutions are actually way more complicated than grab-tape-drop solutions IMO. There's 3 normal bonders, which seems weird, but they move atoms around so that they can be moved back into their original positions. I look forward to seeing the galaxy brain approaches that shuffle atom positions to avoid these extra bonds. This is only barely optimised, so I don't expect to place well among 3-instruction solutions.