Answer:
going L-R on the top bit, it's was/were, quit/quitted, found, had, got, graduated, worked, fell, met, had, bought
on the bottom bit (also left to right), the answers are graduated, found, met, was, fell, got, worked, saved, bought, had, had, quit
Explanation:
This involved learning past participles, which often are the stem + ed (eg. walk ⇒ walked), but also have quite a few irregulars. You may wish to revise this topic. I'm always happy to help!