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Rule "What did happened (happen)?"

This is one of many errors that LanguageTool can detect.

Description:	What did happened (happen)?
Message:	The base form of the verb <suggestion>\4</suggestion> is expected after "do".
Category:	Grammar (ID: GRAMMAR)
Link:	https://languagetool.org/insights/post/grammar-forms-of-do/
Incorrect sentences that this rule can detect:	What did happened there? Correction suggestion: happen What didn't happened there? Correction suggestion: happen
Correct sentences for comparison:	Before that date, those who did so were menaced and expelled from the group. I think the only one is my family who did was my sister, and she’s not a carrier. Why did related molecules become so big? What did SAT originally stand for? What does disabled mean? 20 For everyone who does wicked things hates the light and does not come to the light, lest his works should be exposed.
ID:	WHAT_DID_VBD [1]
Version:	6.8-SNAPSHOT (2025-10-22 22:33:08 +0200)

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