Not able to match regex

Question

I have a string like "5-2,5-12,15-27,5-22,50-3,5-100"

I need a regular expression which matches all the occurrences like below: -

5-2
5-12
5-22
5-100

What will be the correct regex that matches all of them.

Answer 1

Use below regex:

(?<!\d)5-\d{1,}

DEMO