irregular verbs

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Across
  1. 2. fall
  2. 3. bite
  3. 4. become
  4. 5. drive
  5. 7. buy
  6. 8. cost
  7. 9. dig
Down
  1. 1. begin
  2. 2. feel
  3. 3. break
  4. 4. burn
  5. 6. build
  6. 8. catch