An introduction to regular expressions – O'Reilly
Regex match until first instance of certain character - Stack Overflow
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Solved Write down the regular expression that can match: a | Chegg.com
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regex - Regular expression to match a line that doesn't contain a word - Stack Overflow
Restricting Text Responses With Regular Expressions — KoboToolbox documentation
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![Solved What does this regular expression match? ∧[ab] Any | Chegg.com](https://media.cheggcdn.com/media/07e/07ed71a7-3ac0-4469-8ae7-591f331929d4/phpG6JKKx "Solved What does this regular expression match? ∧[ab] Any | Chegg.com")
Solved What does this regular expression match? ∧[ab] Any | Chegg.com
regex - How do I match a number not followed by a letter except for a certain substring - Stack Overflow
