Les régularités

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Across
  1. 3. 69, 63, 57, 51, ____, ____, ____
  2. 4. 71, 66, 61, 56, ____, ____, ____
  3. 6. 5, 13, 21, 29, ____, ____, ____
  4. 9. 70, 65, 60, 55, ____, ____, ____
  5. 10. 25, 31, 37, 43, ____, ____, ____
  6. 12. 21, 28, 35, 42, ____, ____, ____
  7. 15. 9, 11, 13, 15, ____, ____, ____
  8. 16. 24, 32, 40, 48, ____, ____, ____
  9. 17. 55, 47, 39, 31, ____, ____, ____
  10. 18. 18, 19, 20, 21, ____, ____, ____
  11. 20. 58, 51, 44, 37, ____, ____, ____
  12. 22. 50, 43, 36, 29, ____, ____, ____
  13. 23. 14, 17, 20, 23, ____, ____, ____.
  14. 26. 15, 19, 23, 27, ____, ____, ____
  15. 27. 72, 67, 62, 57, ____, ____, ____
Down
  1. 1. 28, 12, 16, 20, ____, ____, ____
  2. 2. 74, 73, 72, 71, ____, ____, ____
  3. 3. 11, 19, 27, 35, ____, ____, ____
  4. 5. 7, 9, 11, 13, ____, ____, ____
  5. 7. 17, 23, 29, 35, ____, ____, ____
  6. 8. 20, 24, 28, 32, ____, ____, ____
  7. 10. 73, 67, 61, 55, ____, ____, ____
  8. 11. 66, 62, 58, 54, ____, ____, ____
  9. 13. 60, 53, 46, 39, ____, ____, ____
  10. 14. 1, 6, 11, 16, ____, ____, ____
  11. 17. 13, 16, 19, 22, ____, ____, ____
  12. 19. 6, 7, 8, 9, ____, ____, ____
  13. 21. 65, 64, 63, 62, ____, ____, ____
  14. 24. 22, 25, 28, 31, ____, ____, ____
  15. 25. 68, 66, 64, 62, ____, ____, ____