0

10

20

30

40

50

-10

-20

010

20

30

40

-10

010

20

30

40

50

60

0

10

20

-10-20-30-40

-20

-30

-10

010

20

0

-10

-20

-30

-40

-20

-30

-10

010

-50

-20

-30

-40

0

10

20

-10-20-30

30

-50

0-40

-30

-20

-10