The past simple of "be" is "was/were"

The past simple of "find" is "finded"

The past simple of "buy" is "bought"

The simple past of "do" is "does"

The simple past of "see" is "saw".

The simple past of "take" is "taken"

The simple past of "make" is "maden"

The simple past of "go" is "went".

The simple past of "run" is "run"

The simple past of "eat" is "ate".