I'm having trouble while making a project, I want to create this :

[![this](https://i.stack.imgur.com/bmRBq.png)](https://i.stack.imgur.com/bmRBq.png)

But for now, it's just lines with a circle to fake the transparency, I try using pathfinder but I didn't find how to do it.

I find a solution by making it a pattern but I prefer having an object I can edit if I need.

Thank you in advance to the nice people who will answer and sorry for my broken english.