How to use a regular expression to find certain words in the text after a certain word?

Question

Regular Expressions

"{\"to_email\":\\"task_id\":\"39a84a7b-b937-4901-90a5-eb19a9411e7e\",\"cc\":[],\"bcc\":[],\"to \":{\"loaded_data\":null,\"generators\":[],\"account_name\":\"taxi\"},\"external_contract_id\":\"2291177/21\",\" reason\":\"notify\"}}"

Text without spaces is given. How to use a regular expression to find certain words (debt, notify, another) if they come after the word reason? That is, if these words come before the word reason - they should not be, if they are after - they should.

Answer 1

The correct answer is to use the built-in json parser of the language you are working with and not engage in perversions.
Shitty answer: or depending on how crooked your line is. It will fail without options if there are quotation marks in the searched word. /(?<="reason":")([^"]+)//(?<=\\"reason\\":\\")(.+?)(?=\\")/

Answer 2

\breason\b.+\K(?:\bdebt\b|\bnotify\b|\banother\b)