N
M
S
S
S
S
M
N
N
M
S
M
M
N
N
N
N
M
S
N
S
N
M
M
M
M
S
S
N
M
S
N
M
S
S
S
S
M
M
M
M
M
M
M
M
S
M
S
M
M