I have a very long string (2k chars) and I want to match every occurrence that has:

aaa + anything + bbb + anything + ccc

For example, I would like matches like:

aaa xx bbb y ccc

aaa uuu o bbb l iii ccc

This would be easy to obtain with regex, BUT there is a catch: all the matches can only have aaa at the beginning, I cant have aaa anywhere in the middle of the matches.

I tried this regex /aaa.+?bbb.+?ccc/ but it matches things like aaa h bbb aaa ccc which is not what I need because aaa is also in the middle.

After searching in Google, I think I need to use negative lookahead but I got lost and nothing worked. Do you have any suggestion to solve this problem using only regex without doing any other string manipulation (explode, splits…)?