Duplicate number : 1,2,3,5,6,7,8,9,10,11,12,13,15,17,18,19,21,22,25, 26,27,28,29,30,31,32

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