irregular verbs

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Across
  1. 2. Past of choose
  2. 3. past and participle of buy
  3. 5. past of are
  4. 6. past and participle of build
  5. 7. past of break
  6. 8. participle of be
  7. 9. participle of choose
Down
  1. 1. past of is and am
  2. 2. past and participle of catch
  3. 3. past and participle of bury
  4. 4. participle of become
  5. 6. past of become
  6. 7. past and participle of bring
  7. 8. participle of break