First question here;

Hello, a friend of mine made this a while back, but can't remember the latex code to make it. I need to make it myself and have no idea how this is done. I need to know how. Thank you very much!

PS: he said he used no programs or expansions, only the basic LaTeX.

[![enter image description here](https://i.stack.imgur.com/oGzeb.png)](https://i.stack.imgur.com/oGzeb.png)