Irregular verbs

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Across
  1. 1. Past form of BE in singular
  2. 3. Past participle of DO
  3. 5. Past participle form of BE
  4. 6. Past and past participle of UNDERSTAND
  5. 9. Infinite of BROUGHT
  6. 10. Past and past participle form of HAVE
  7. 11. Past and past participle of CUT
  8. 12. Past form of COME
Down
  1. 1. Past form of WRITE
  2. 2. Past participle of SEE
  3. 4. Past of LAY
  4. 5. Past and past participle form of BUY
  5. 7. Past form of DO
  6. 8. Past participle of TAKE