The verb do, which has the reduplicated form did for its past tense
The words do, does and did often cause confusion in the English language.
They are all forms of the verb to do.
The verb to do can be used as an action verb and also as an auxiliary verb.
DO vs DOES – the difference between DO and DOES
|do / does||did||done|
To find the correct form, you can use an online database of the irregular verbs.
For example: irregular verb DO