V
S
B
B
F
V
3
3
V
B
B
B
B
3
3
F
3
S
S
F
S
B
S
V
V
F
B
B
B
S
V
F
3
V
S
V
V
3
S
B
F
F
V
3
V
V
V
F
S
3
S
F
S
3
F
3
V
S
S
V
3
V
3
B
F
3
3
F
S
F
B
V
F
S
S
3
F
F
S
B
V
S
F
B
B
F
B
3
B
3