The simple past tense is mistook.
The past participle of "mistake" is "mistaken."
Yes mistaken is the past participle of mistake.Sorry I have mistaken you for somebody else.Also mistaken can be an adjective.Sorry I am mistaken.
The past perfect tense of "mistake" is "had mistaken."
The past simple of "have" is "had."
The simple past is had.
Past simple and simple past are both the same thing. They are both the past tense of a verb.
The simple past tense is climbed.
The simple past and past participle are both 'had'.
The simple past and past participle are both brought.
The simple past tense is studied.
"Listened" is the past simple of "listen" as well as the past participle.
Had is the past of have. A past simple sentence:I had a headache this morning