IRREGULAR VERBS that...
have no change
BET
BROADCAST
BURST
CAST
COST
CUT
HIT
HURT
LET
PUT
READ
but the pronounciation changes
SET
SHED
SHUT
SPLIT
end in -EN
Awake/Awoke/Awoken
Beat/Beat/Beaten
Bite/Bit/Bitten
Break/Broke/Broken
Choose/Chose/Chosen
Drive/Drove/Driven
Eat/Ate/Eaten
Fall/Fell/Fallen
Forbid/Forbade/Forbidden
Forget/Forgot/Forgotten
Forgive/Forgave/Forgiven
Drive/Drove/Driven
Give/Gave/Given
Hide/Hid/Hidden
Ride/Rode/Ridden
See/Saw/Seen
Speak/Spoke/spoken
Steal/Stole/stolen
Wake/Woke/Woken
Write/Wrote/Written
end in -ught
Bring/Brought/Brought
Buy/Bought/Bought
Catch/Caught/Caught
Fight/Fought/Fought
Seek/Sought/Sought
Teach/Taught/Taught
Think/Thought/Thought
past simple and past participle is the same
Bend/Bent/Bent
Bleed/Bled/Bled
Breed/Bred/Bred
Build/Built/Built
Creep/Crept/Crept
Dream/Dreamt/Dreamt
Dig/Dug/Dug
Feel/Felt/Felt
Find/Found/Found
Fling/Flung/Flung
Get/Got/Got
Have/Had/Had
Hear/Heard/Heard
Keep/Kept/Kept
Leave/Left/Left
Lose/Lost/Lost
Lay/Laid/Laid
Make/Made/Made
Meet/Met/Met
Say/Said/Said
Pay/Paid/Paid
Sit/Sat/Sat
Leave/Left/Left
Spend/Spent/Spent
Stand/Stood/Stood
Tell/Told/Told
Understand/Understood/Understood
Deal/Dealt/Dealt
Win/Won/Won
end in -wn
Blow/Blew/Blown
Fly/Flew/Flown
Sew/Sewed/Sewn
Grow/Grew/Grown
Throw/Threw/Thrown
Saw/Sawed/Sawn
end in -d
Bind/Bound/Bound
Dive/Dived/Dived
Flee/Fled/Fled
Lead/Led/Led
Prove/Proved/Proved
Slide/Slid/Slid
Wind/Wound/Wound
Sell/Sold/Sold