Oil and gas vocabulary

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Across
  1. 6. past simple of can
  2. 7. past participle of to go
  3. 8. past participle of to see
  4. 10. past simple and participle of to think
  5. 12. past simple of to wear
  6. 14. past simple and participle of to say
Down
  1. 1. past simple and participle of to buy
  2. 2. past simple of to get
  3. 3. past simple and participle of to feel
  4. 4. past simple of to go
  5. 5. past simple of to know
  6. 6. past simple of to come
  7. 9. past simple and participle of to put
  8. 11. past simple and participle of to have
  9. 13. past simple of to see