Are you trying to transform the items in red to the same word except in brackets, or are you trying to group them?

I have a list of different words each separated by a comma and I want to put each of these words into brackets. So yeah in red those are the différents words I have and in green it's how I'd want those words to be.
I have a lot of words and it's a hassle to do manually so I wanted to know if there was a easier way to do it (I know the CTRL+H option but I have no idea how to format what I want to do)