'Accepted' is a past participle of 'accept' already.
accepted
Accepted
Accepted
The past participle is equipped. Equipt is also accepted.
Accepted
Both forms are struck. Stricken is also accepted for the past participle.
accepted.
Present - accepting Past - accepted
Sneaked and snuck are both accepted in standard English.
Most commonly stridden but strode and strid are also accepted.
The past participle of am is been. Not does not have a past participle
The past participle of do is done. The past participle of have is had.
The past participle of have is had....:) I have had...
The past and past participle for "buy" is "bought."