1

2

1

1 2-

Dump Truck

1 2-

3

1 4- 4

2

5

6

7

5 6-

5 7-5 6-

3

8

5 9-

5 8-

8

9

5 7-

5 8-

4

1 10-1 10-

1 12-

11

12

5 10-

1 4-

10

5

1 12-

1 14-

1 15-

1 14-

14

13

15

6

1 15-

1 16-

1 16-

1 17-

1716

7

1 17-

1 19-

Dump Truck

18

19