2

2

US $2

U

U

US $U

7

7

US $7

0

0

US $0

1

1

US $1

O

O

US $O

0

0

US $0

0

0

US $0

2

2

US $2

U

U

US $U

h

h

US $h

3

3

US $3

h

h

US $h

US $

2

2

US $2

h

h

US $h

3

3

US $3

2

2

US $2

U

U

US $U

2

2

US $2

O

O

US $O

1

1

US $1

h

h

US $h

2

2

US $2

U

U

US $U

2

2

US $2

U

U

US $U

2

2

US $2

U

U

US $U