verbos irregulares

1. Vowel changes to a

1.1. begin

1.1.1. began

1.1.1.1. sing

1.1.1.1.1. sang

2. Vowel changes to o

2.1. get

2.1.1. got

2.1.1.1. freeze

2.1.1.1.1. froze

3. Final ght

3.1. teach

3.1.1. taught

3.1.1.1. buy

3.1.1.1.1. bought

4. No change

4.1. cost

4.1.1. cut

5. Final D

5.1. sell

5.1.1. sold

5.1.1.1. tell

5.1.1.1.1. told

6. Final T

6.1. send

6.1.1. sent

6.1.1.1. lose

6.1.1.1.1. lost

7. Final ew

7.1. know

7.1.1. knew

7.1.1.1. fly

7.1.1.1.1. flew