A
B
S
B
N
G
N
A
A
B
B
G
B
A
N
B
N
N
A
B
A
N
B
S
G
S
A
S
G
A
B
G
B
A
N
B
S
G
A
N
G
G
G
N
S
S
B
G
A
A
G
G
B
N
G
S
B
A
S
N
S
N
B
N
A
A
G
N
N
G
G
B
S
G
A
A
S
N
G
G
S
S
S
B
S
A
S
S
N
B
B
A
N
B
S
A
N
S
G