20

1 1 

2 2 

3 3 

4 4 

5 5 

6 6 

7 7 

8 8 

9 9 

10 11 

11 12 

12 13 

13 14 

14 15 

15 16 

16 17 

17 18 

18 19 

19 20 

20 21 

21 22 

22 23 

23 24 

24 25 

25 26 

26 28 

27 29 

28 30 

29 31 

30 32 

31 33 

32 34 

33 35 

34 36 

35 37 

36 38 

37 39 

38 40 

39 41 

40 42 

41 43 

42 44 

43 45 

44 46 

45 47 

46 48 

47 49 

48 50 

49 51 

50 52 

51 53 

52 54 

53 55 

54 56 

55 57 

56 58 

57 59 

58 60 

59 61 

60 62 

61 63 

62 64 

63 65 

64 66 

65 67 