1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

5

6

6

7

7

7

8

8

9

A

A

C

C

C

D

D

D

E

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F