List of Irregular Verbs

There are regular past and past participle verb forms and they take only -ed:
open, opened -ask, asked- want,wanted-answer,answered- wash,washed
The others are called irregular as they don't take -ed,they change in several ways:

List of Irregular Verbs in English
Present Past Past Participle
be was, were been
become became become
begin began begun
blow blew blown
break broke broken
bring brought brought
build built built
burst burst burst
buy bought bought
burst burst burst
catch caught caught
choose chose chosen
come came come
cut cut cut
deal dealt dealt
do did done
drink drank drunk
drive drove driven
eat ate eaten
fall fell fallen
feed fed fed
feel felt felt
fight fought fought
find found found
fly flew flown
forbid forbade forbidden
forget forgot forgotten
forgive forgave forgiven
freeze froze frozen
get got gotten
give gave given
go went gone
grow grew grown
have had had
hear heard heard
hide hid hidden
hold held held
hurt hurt hurt
keep kept kept
know knew known
lay laid laid
lead led led
leave left left
let let let
lie lay lain
lose lost lost
make made made
meet met met
pay paid paid
quit quit quit
read read read
ride rode ridden
run ran run
say said said
see saw seen
seek sought sought
sell sold sold
send sent sent
shake shook shaken
shine shone shone
sing sang sung
sit sat sat
sleep slept slept
speak spoke spoken
spend spent spent
spring sprang sprung
stand stood stood
steal stole stolen
swim swam swum
swing swung swung
take took taken
teach taught taught
tear tore torn
tell told told
think thought thought
throw threw thrown
understand understood understood
wake woke (waked) woken (waked)
wear wore worn
win won won
write wrote written