Design

1-2 split

1-3 split

2-1 merge

3-1 merge

Birth

Death

1

6

0

36

0

15

2

2

21

0

160

3

24

6

3

10

0

78

0

19

2

4

10

0

64

0

41

4

5

26

0

154

2

32

1

6

25

5

222

23

19

0

7

12

0

110

4

29

1

8

21

10

86

16

35

5