Tim's Possibly Incredibly Difficult Birthday Present Puzzle

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Across
  1. 2. present (7)
  2. 6. present (5,3)
  3. 8. present (6,5,6)
  4. 9. present (7)
  5. 10. present (5)
  6. 11. present (9)
Down
  1. 1. present (10,5)
  2. 3. present (4)
  3. 4. present (7,7)
  4. 5. present (3,5,3)
  5. 7. present (5,3,4)