Common Irregular Verbs - Simple Past and Past Participle

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Across
  1. 2. simple past form of write
  2. 7. simple past form of understand
  3. 8. past participle form of be
  4. 9. past participle form of write
Down
  1. 1. simple past form of fly
  2. 3. past participle form of teach
  3. 4. past participle form of begin
  4. 5. simple form of fight
  5. 6. simple past form of know