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Probably you won’t find it. Perhaps google cache may be of some help but if you’ve changed the permalink structure the permalinks in database would be overwriten.

Thank you Adam for your reply.

How can I infer the permalink from Google cache?
I have such links from Google:
https://acadcon.com/blog/services/
https://acadcon.com/blog/majors/%D8%AA%D8%AE%D8%B5%D8%B5%D8%A7%D8%AA-%D8%A7%D9%84%D8%B9%D9%84%D9%88%D9%85-%D8%A7%D9%84%D8%A8%D8%AD%D8%AA%D8%A9/
https://acadcon.com/blog/offers_malaysia/
https://acadcon.com/blog/english_brazil/
https://acadcon.com/blog/offers_new_zealand/
https://acadcon.com/contact_us/

ALL now are giving 404 Error.