Graph Nodes:
X1;X2;X3;X4;X5;X6;X7;X8;X9;X10;X11;X12;X13;X14;X15;X16;X17;X18;X19;X20;X21;X22;X23;X24;X25;X26;X27;X28;X29;X30;X31;X32;X33;X34;X35;X36;X37;X38;X39;X40;X41;X42;X43;X44;X45;X46;X47;X48;X49;X50;X51;X52;X53;X54;X55;X56

Graph Edges:
1. X1 --> X15
2. X2 --> X3
3. X3 --> X4
4. X3 --> X8
5. X3 --> X35
6. X3 --> X40
7. X3 --> X43
8. X3 --> X44
9. X3 --> X45
10. X3 --> X46
11. X3 --> X48
12. X3 --> X50
13. X3 --> X51
14. X3 --> X52
15. X3 --> X53
16. X3 --> X54
17. X3 --> X55
18. X3 --> X56
19. X4 --> X42
20. X5 --> X7
21. X6 --> X7
22. X7 --> X41
23. X8 --> X11
24. X9 --> X11
25. X10 --> X11
26. X11 --> X34
27. X12 --> X33
28. X13 --> X15
29. X14 --> X15
30. X15 --> X16
31. X16 --> X20
32. X16 --> X24
33. X16 --> X32
34. X17 --> X19
35. X18 --> X19
36. X19 --> X20
37. X20 --> X24
38. X21 --> X23
39. X22 --> X23
40. X23 --> X24
41. X24 --> X26
42. X24 --> X32
43. X25 --> X26
44. X26 --> X28
45. X26 --> X31
46. X26 --> X47
47. X27 --> X28
48. X27 --> X30
49. X27 --> X31
50. X28 --> X30
51. X29 --> X30
52. X30 --> X32
53. X31 --> X32
54. X32 --> X33
55. X32 --> X38
56. X33 --> X34
57. X34 --> X41
58. X35 --> X37
59. X36 --> X37
60. X37 --> X39
61. X38 --> X39
62. X39 --> X41
63. X40 --> X41
64. X41 --> X42
65. X42 --> X49
66. X47 --> X49
