Irregular verbs

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Across
  1. 2. base form of "picar"
  2. 4. past simple of sweep
  3. 6. past simple of shine
  4. 9. past participle of
  5. 11. past simple of do
  6. 12. past participle of write
  7. 14. past simple of sit
  8. 15. past simple of hang
  9. 16. past participle of keep
Down
  1. 1. past participle of lay
  2. 2. base form of "cerrar"
  3. 3. past participle of spell
  4. 4. past simple of spread
  5. 5. past participle of stand
  6. 6. past simple of sew
  7. 7. past participle of run
  8. 8. past participle of wear
  9. 10. base form of "pegar"
  10. 11. past simple of dream
  11. 13. past participle of teach