Irregular verbs

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Across
  1. 2. Base form of fell
  2. 4. Base form of kept
  3. 5. Base form of ate
  4. 7. Base form of swam
  5. 8. Base form of became
  6. 11. Base form of forgot
  7. 13. Base form of drank
Down
  1. 1. Base form of said
  2. 3. Base form of left
  3. 4. Base form of knew
  4. 6. Base form of went
  5. 7. Base form of sent
  6. 9. Base form of cut
  7. 10. Base form of knew
  8. 12. Base form of got