-1

-1

0

1

0-1

2

3

2-3

4

5

4-5

6

7

6-7

8

9

8-9

10

11

10-11

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13

12-13

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14-15

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16-17

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18-19

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20-21

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24-25

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28-29

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30-31

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34-35

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36-37

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38-39

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40-41

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42-43

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44-45

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46-47

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50-51

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54-55

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56-57

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58-59

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60-61

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64

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66-67

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68-69

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70-71

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72-73

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74-75

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76-77

78

78