How do I recreate the left aspect, the place the wall texture has an "un-merged" line sample?

I'm presently renovating one of many spawned prefab ruins. However I can't re-create the identical type because the builders did, as a result of as you see on the suitable aspect, the wall merges, whereas the builders managed to maintain it separate.

It doesn’t matter what I do, it merges. You’ll be able to't rotate the block and you may't use the constructing hammer to change it both.