php - Regular Exp find duplicate phrases 2 sequentially words in a pattern

Question

I would like to catch 2 words sequentially duplicated in a pattern

I would like to be able to catch duplicate words in this case "cancer cervical" because they are the only duplicate 2 words sequentially.

pattern "cancer cervical diane mortality cervical cancer cervical diane sea"

I use this Regular expression but still can't catch 2 sequentially duplicated words.

/(W|^)(.+)s2/ig

Answer 1

This should be able to do the job: /(w+sw.*)s.*1/ if you are dealing with words including numbers.

var string = "cancer cervical diane mortality cervical cancer cervical diane sea";
var regex = /(w+sw.*)s.*1/;
console.log(string.match(regex));