What are the past forms of the verbs below? Which are regular (R) and irregular (I)?

1. see - saw (I), 2. go - went (I), 3. read - read (I), 4. make - made (I), 5. take - took (I), 6. write - wrote (I), 7. send - sent (I), 8. buy - bought (I), 9. work - worked (R), 10. play - played (R), 11. find - found (I), 12. think - thought (I), 13. have - had (I), 14. get - got (I).