irregular verbs

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Across
  1. 3. the past tense of see
  2. 4. the past tense of break
  3. 5. the past tense of teach
  4. 7. the past tense of do
Down
  1. 1. the past tense of find
  2. 2. the past tense of leave
  3. 3. the past tense of sing
  4. 6. the past tense of tell