Before I start, I took a look at other answers people wrote, but it still did not help me, as I can't understand.

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

I tried finding the period of each function using [period/B], but what do I do next?

I can see its period is $2\pi + \pi + 2\pi/3$, and what do I do with that now?  

I have periods of these separate functions, how do I combine them?