Duplicate number : 2,3,4,5,7,8,9,11,12,14,16,17,18,19,20,24,25,28,29,30,31,32,33,35,37

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39