Most common irregular verbs : https://www.kaplaninternational.com/blog/common-irregular-verbs-english

1. To be
Simple present: I am, you are, we are, he/she is, they are
Simple past: was, were
I am kind; You were late

2. To have
Simple present: I have, you have, we have, he/she has, they have
Simple past: had
I have a problem; I had a problem

3. To do
Simple present: I do, you do, we do, he/she does, they do
Simple past: did
Do your homework; I did my homework

4. To go
Simple present: I go, you go, we go, he/she goes, they go
Simple past: went
I go to work; I went to work

5. To say
Simple present: I say, you say, we say, he/she says, they say
Simple past: said
I say yes; I said yes

6. To see
Simple present: I see, you see, we see, he/she sees, they see
Simple past: saw
I see him; I saw him

7. To take
Simple present: I take, you take, we take, he/she takes, they take
Simple past: took
I take tablets; I took tablets

8. To get
Simple present: I get, you get, we get, he/she gets, they get
Simple past: got
I get confused; I got confused

9. Can
Simple present: I can, you can, we can, he/she can, they can
Simple past: could
I can do it; I could do it

10. Will
Simple present: I will, you will, we will, he/she will, they will
Simple past: would
I will try; I would try (but)…