Puzzle

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Across
  1. 3. ai, more than one time
  2. 5. ai
  3. 6. ai, yamanote line
  4. 7. ay
  5. 9. ay, game
  6. 11. ai, every day
  7. 13. ay, so-so
  8. 15. ay, something you sail
Down
  1. 1. Lasse
  2. 2. ai, over your belt
  3. 4. ai
  4. 6. ay, after yesterday
  5. 8. ay, earth
  6. 10. Teacher
  7. 12. ay
  8. 14. ai, in your head