1. Irregular verbs

2. BLOW/BLEW/BLOWN

3. DRAW/DREW/DRAWN

4. GIVE/GAVE/GIVEN

5. BURST/BURST/BURST

6. RING/RANG/RUNG

7. RUN/RAN/RUN

8. SET/SET/SET

9. SEW/SEWED/SEWN

10. SHINE/SHONE/SHONE

11. SLEEP/SLEPT/SLEPT

12. SMELL/SMELT/SMELT

13. SPRING/SPRANG/SPRUNG

14. STING/STUNG/STUNG

15. SWEEP/SWEPT/SWEPT

16. SWIM/SWAM/SWUM

17. TEACH/TAUGHT/TAUGHT

18. TAKE/TOOK/TAKEN

19. TEAR/TORE/TORN

20. THINK/THOUGHT/THOUGT

21. THROW/THREW/THROWN