Past is : Beat (itself) Past Particle : Beaten
The simple past and past participle is had.
The past participle for shrink is shrunk.shrink / shrank / shrunk
"Encouraged" is the simple past and past participle of the verb "encourage".
The past participle of do is 'done'.
The past participle is burst.
The past participle is drawn.
Been
The past participle (and simple past) is loved.
infinitive: be past: was/were past participle: been
The past tense is took. The past participle is taken.
The past participle of "hide" is "hidden".