irregular verbs

Across

1. past simple of swim
4. past participle of leave
6. past simple of drink
9. past participle of fall
11. past simple of understand
14. past simple of sing
15. past simple of think
16. past simple of go

Down

2. past participle of write
3. past simple of break
5. past simple of come
7. past participle of ride
8. past simple of teach
10. past simple of lose
12. past simple of drive
13. past particple of eat
14. past simple of shine