Here are some factors that could potentially contribute to recurrent miscarriages:

1. Chromosomal Abnormalities: Chromosomal abnormalities in the embryo or fetus are a common cause of miscarriages. These abnormalities typically occur randomly and are not usually influenced by parental factors.

2. Hormonal Imbalances: Imbalances in hormones, such as issues with progesterone levels, can affect the ability to sustain a pregnancy and increase the risk of miscarriage.

3. Uterine Structural Issues: Structural abnormalities of the uterus, such as uterine septum, polyps, fibroids, or cervical insufficiency, can raise the risk of recurrent miscarriages.

4. Immunological Factors: Certain immune system disorders or autoimmune conditions may contribute to recurrent miscarriages.

5. Blood Clotting Disorders: Inherited or acquired blood clotting disorders, such as antiphospholipid syndrome, can increase the likelihood of miscarriage.

6. Advanced Maternal Age: As women age, the risk of miscarriages increases due to a higher probability of chromosomal abnormalities in the eggs.

7. Infections: Certain infections, including bacterial or viral infections, can raise the risk of miscarriage.

8. Lifestyle Factors: Lifestyle choices, such as smoking, excessive alcohol consumption, drug use, or exposure to environmental toxins, can contribute to miscarriages.

While here are the possible blood group combinations for pregnancy, along with potential complications that may arise:

1. A+ Male - A+ Female:
- Compatibility: A+ blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

2. A+ Male - A- Female:
- Compatibility: A+ and A- blood types are generally compatible, and there is usually no significant risk of complications related to blood type during pregnancy.

3. A+ Male - AB+ Female:
- Compatibility: A+ and AB+ blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

4. A+ Male - AB- Female:
- Compatibility: A+ and AB- blood types are generally compatible, but there can be a potential risk of complications related to the Rh factor during pregnancy if the mother is Rh-negative (AB-) and the father is Rh-positive (A+). In such cases, medical interventions, such as Rh immune globulin (RhIg) injections, are typically recommended.

5. A+ Male - B+ Female:
- Compatibility: A+ and B+ blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

6. A+ Male - B- Female:
- Compatibility: A+ and B- blood types can be compatible, but there is a potential risk of complications related to the Rh factor during pregnancy if the mother is Rh-negative (B-) and the father is Rh-positive (A+). In such cases, medical interventions, such as Rh immune globulin (RhIg) injections, are typically recommended.

7. A+ Male - O+ Female:
- Compatibility: A+ and O+ blood types are generally compatible, and there is usually no significant risk of complications related to blood type during pregnancy.

8. A+ Male - O- Female:
- Compatibility: A+ and O- blood types can be compatible, but there is a potential risk of complications related to the Rh factor during pregnancy if the mother is Rh-negative (O-) and the father is Rh-positive (A+). In such cases, medical interventions, such as Rh immune globulin (RhIg) injections, are typically recommended.

9. A- Male - A- Female:
- Compatibility: A- blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

10. A- Male - A+ Female:
- Compatibility: A- and A+ blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

11. A- Male - B- Female:
- Compatibility: A- and B- blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

12. A- Male - B+ Female:
- Compatibility: A- and B+ blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

13. A- Male - AB- Female:
- Compatibility: A- and AB- blood types are generally compatible, but there can be a potential risk of complications related to the Rh factor during pregnancy if the mother is Rh-negative (AB-) and the father is Rh-positive (A-). In such cases, medical interventions, such as Rh immune globulin (RhIg) injections, are typically recommended.

14. A- Male - AB+ Female:
- Compatibility: A- and AB+ blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

15. A- Male - O- Female:
- Compatibility: A- and O- blood types are generally compatible, but there can be a potential risk of complications related to the Rh factor during pregnancy if the mother is Rh-negative (O-) and the father is Rh-positive (A-). In such cases, medical interventions, such as Rh immune globulin (RhIg) injections, are typically recommended.

16. A- Male - O+ Female:
- Compatibility: A- and O+ blood types are generally compatible, and there is usually no significant risk of complications related to blood type during pregnancy.

17. B+ Male - B+ Female:
- Compatibility: B+ blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

18. B+ Male - B- Female:
- Compatibility: B+ and B- blood types are generally compatible, and there is usually no significant risk of complications related to blood type during pregnancy.

19. B+ Male - O- Female:
- Compatibility: B+ and O- blood types can be compatible, but there can be a potential risk of complications related to the Rh factor during pregnancy if the mother is Rh-negative (O-) and the father is Rh-positive (B+). In such cases, medical interventions, such as Rh immune globulin (RhIg) injections, are typically recommended.

20. B+ Male - O+ Female:
- Compatibility: B+ and O+ blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

21. B- Male - B- Female:
- Compatibility: B- blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

22. B- Male - B+ Female:
- Compatibility: B- and B+ blood types are generally compatible, and there is usually no significant risk of complications related to blood type during pregnancy.

23. B- Male - O- Female:
- Compatibility: B- and O- blood types are generally compatible, but there can be a potential risk of complications related to the Rh factor during pregnancy if the mother is Rh-negative (O-) and the father is Rh-positive (B-). In such cases, medical interventions, such as Rh immune globulin (RhIg) injections, are typically recommended.

24. B- Male - O+ Female:
- Compatibility: B- and O+ blood types are generally compatible, and there is usually no significant risk of complications related to blood type during pregnancy.

25. O+ Male - O+ Female:
- Compatibility: O+ blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

26. O+ Male - O- Female:
- Compatibility: O+ and O- blood types can be compatible, but there can be a potential risk of complications related to the Rh factor during pregnancy if the mother is Rh-negative (O-) and the father is Rh-positive (O+). In such cases, medical interventions, such as Rh immune globulin (RhIg) injections, are typically recommended.

27. O+ Male - A+ Female:
- Compatibility: O+ and A+ blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

28. O+ Male - A- Female:
- Compatibility: O+ and A- blood types can be compatible, but there can be a potential risk of complications related to the Rh factor during pregnancy if the mother is Rh-negative (A-) and the father is Rh-positive (O+). In such cases, medical interventions, such as Rh immune globulin (RhIg) injections, are typically recommended.

29. O+ Male - AB+ Female:
- Compatibility: O+ and AB+ blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

30. O+ Male - AB- Female:
- Compatibility: O+ and AB- blood types can be compatible, but there can be a potential risk of complications related to the Rh factor during pregnancy if the mother is Rh-negative (AB-) and the father is Rh-positive (O+). In such cases, medical interventions, such as Rh immune globulin (RhIg) injections, are typically recommended.

31. O+ Male - B- Female:
- Compatibility: O+ and B- blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

32. O+ Male - B+ Female:
- Compatibility: O+ and B+ blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

33. O- Male - O- Female:
- Compatibility: O- blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

34. O- Male - O+ Female:
- Compatibility: O- and O+ blood types can be compatible, but there can be a potential risk of complications related to the Rh factor during pregnancy if the mother is Rh-negative (O-) and the father is Rh-positive (O+). In such cases, medical interventions, such as Rh immune globulin (RhIg) injections, are typically recommended.

35. O- Male - A+ Female:
- Compatibility: O- and A+ blood types can be compatible, but there can be a potential risk of complications related to the Rh factor during pregnancy if the mother is Rh-negative (O-) and the father is Rh-positive (A+). In such cases, medical interventions, such as Rh immune globulin (RhIg) injections, are typically recommended.

36. O- Male - A- Female:
- Compatibility: O- and A- blood types can be compatible, and there is usually no significant risk of complications related to blood type during pregnancy.

37. O- Male - AB+ Female:
- Compatibility: O- and AB+ blood types can be compatible, but there can be a potential risk of complications related to the Rh factor during pregnancy if the mother is Rh-negative (O-) and the father is Rh-positive (AB+). In such cases, medical interventions, such as Rh immune globulin (RhIg) injections, are typically recommended.

38. O- Male - AB- Female:
- Compatibility: O- and AB- blood types can be compatible, and there is usually no significant risk of complications related to blood type during pregnancy.

39. O- Male - B- Female:
- Compatibility: O- and B- blood types can be compatible, and there is usually no significant risk of complications related to blood type during pregnancy.

40. O- Male - B+ Female:
- Compatibility: O- and B+ blood types can be compatible, but there can be a potential risk of complications related to the Rh factor during pregnancy if the mother is Rh-negative (O-) and the father is Rh-positive (B+). In such cases, medical interventions, such as Rh immune globulin (RhIg) injections, are typically recommended.

41. AB+ Male - AB+ Female:
- Compatibility: AB+ blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

42. AB+ Male - AB- Female:
- Compatibility: AB+ and AB- blood types can be compatible, and there is usually no significant risk of complications related to blood type during pregnancy.

43. AB+ Male - A+ Female:
- Compatibility: AB+ and A+ blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

44. AB+ Male - A- Female:
- Compatibility: AB+ and A- blood types can be compatible, and there is usually no significant risk of complications related to blood type during pregnancy.

45. AB+ Male - B+ Female:
- Compatibility: AB+ and B+ blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

46. AB+ Male - B- Female:
- Compatibility: AB+ and B- blood types can be compatible, and there is usually no significant risk of complications related to blood type during pregnancy.

47. AB+ Male - O+ Female:
- Compatibility: AB+ and O+ blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

48. AB+ Male - O- Female:
- Compatibility: AB+ and O- blood types can be compatible, and there is usually no significant risk of complications related to blood type during pregnancy.

49. AB- Male - AB- Female:
- Compatibility: AB- blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

50. AB- Male - AB+ Female:
- Compatibility: AB- and AB+ blood types can be compatible, and there is usually no significant risk of complications related to blood type during pregnancy.

51. AB- Male - A+ Female:
- Compatibility: AB- and A+ blood types can be compatible, and there is usually no significant risk of complications related to blood type during pregnancy.

52. AB- Male - A- Female:
- Compatibility: AB- and A- blood types can be compatible, and there is usually no significant risk of complications related to blood type during pregnancy.

53. AB- Male - B+ Female:
- Compatibility: AB- and B+ blood types can be compatible, and there is usually no significant risk of complications related to blood type during pregnancy.

54. AB- Male - B- Female:
- Compatibility: AB- and B- blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

55. AB- Male - O+ Female:
- Compatibility: AB- and O+ blood types can be compatible, and there is usually no significant risk of complications related to blood type during pregnancy.

56. AB- Male - O- Female:
- Compatibility: AB- and O- blood types are generally compatible, and there is typically no significant risk of complications related to blood type during pregnancy.

It is advisable for the couple to consult with healthcare professionals such as obstetricians, gynecologists, or reproductive specialists. These professionals can evaluate your wife's medical history, conduct appropriate tests, and provide a comprehensive assessment. This process will help identify any underlying causes and develop a personalized treatment plan to enhance the chances of a successful pregnancy.

May your journey towards parenthood be filled with joy and success as you embark on the beautiful path of building your family.