How to write out burps and stomach gurgles

The onomatopoeia specifically. I know there is the usual ‘Uuuuurup’ and such. But is there any other specific way to write out such sounds?

Preferably a how to for fiction. Any advice is welcome, thank you.

I’ve already made a thread discussing this. Favorite ways to spell out a burp?

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Appreciate it, thank you!

Did you also cover stomach noises by chance?

I think this one covers that:

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