{-20}

1 {-1} 

2 {-2} 

3 {-3} 

4 {-4} 

5 {-5} 

6 {-6} 

7 {-7} 

8 {-8} 

9 {-9} 

10 {-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} 

27 {-27} 

28 {-28} 

29 {-29} 

30 {-30} 

31 {-31} 

32 {-32} 

33 {-33} 

34 {-34} 

35 {-35} 

36 {-36} 

37 {-37} 

38 {-38} 

39 {-39} 

40 {-40} 

41 {-41} 

42 {-42} 

43 {-43} 

44 {-44} 

45 {-45} 

46 {-46} 

47 {-47} 

48 {-48} 

49 {-49} 

50 {-50} 

51 {-51} 

52 {-52} 

53 {-53} 

54 {-54} 

55 {-55} 

56 {-56} 

57 {-57} 

58 {-58} 

59 {-59} 

60 {-60} 

61 {-61} 

62 {-62} 

63 {-63} 

64 {-64} 

65 {-65} 

66 {-66} 

67 {-67} 

68 {-68} 

69 {-69} 