Verbe neregulate:
Was- be, WAS, been
Took- take, TOOK, taken
Have- have, had, had
Go- go, WENT, gone
Know- KNOW, knew, known
Woke- wake, WOKE, woken
Verbe regulate:
Arrive- arrived
Believe- believed
Complain- complained
Climb- climbed
Step- stepped
Trip- tripped