S
T
B
T
H
G
H
B
T
H
B
B
T
T
H
G
B
H
B
H
G
H
B
G
B
T
T
S
B
G
S
T
H
S
S
G
T
G
S
H
B
G
H
S
T
S
G
S
H
G
S
H
G
G
G
S
B
B
G
G
B
S
T
T
B
S
H
H
T
T
T
H
B
S
S