a
x1
x1
o
x1
x1
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x1
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x1
x1
+
x1
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+
x1
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x1
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M
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M
x1
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M
x1
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J1
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J2
x1
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x3
J2
x1
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J2
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J3
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x1
x2
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x2
J3
x1
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x4
x1
Q11
x1
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x2
Q11
x1
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x1
Q21
x1
x2
x3
x3
Q21
x1
x2
x3
x2
Q21
x1
x2
x3
x1
Q22
x1
x2
x3
x3
Q22
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Q22
x1
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x1
Q31
x1
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Q31
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Q31
x1
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Q31
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Q32
x1
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x4
Q32
x1
x2
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Q32
x1
x2
x3
x4
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Q32
x1
x2
x3
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Q33
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x4
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Q33
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x2
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x3
Q33
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R1
x1
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x3
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x5
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R3
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x4
x5
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R3
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x2
x3
x4
x5
x1
P
0
0
0
0
S
0
+
x
S
y
S
+
x
y
a
l
x
l
a
a
x
l
o
x
o
l
l
x
o
x
l
x
l
x
a
x
a
S
x
S
l
x
a
+
x
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+
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x
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+
x
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+
x
l
y
a
P
x1
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P
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l
x2
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P
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P
l
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x
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y
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+
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y
P
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M
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l
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+
M
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y
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l
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y
0
J2
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l
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y
P
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0
0
J1
l
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0
0
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x
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0
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0
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P
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0
y
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P
S
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0
0
y
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0
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0
S
y
o
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P
S
x1
0
0
y
a
P
x1
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0
Q33
x1
x2
a
x3
x3
a
P
x1
x2
x3
0
Q32
x1
x2
a
x3
x2
a
P
x1
x2
x3
0
Q31
x1
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a
x3
x1
a
P
x1
x2
0
0
Q22
x1
a
x2
x2
a
P
x1
x2
0
0
Q21
x1
a
x2
x1
a
P
x1
0
0
0
Q11
a
x1
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Q33
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o
x3
y
o
P
x1
x2
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y
Q32
x1
x2
o
x3
y
o
P
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y
Q31
x1
x2
o
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y
o
P
x1
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y
Q22
x1
o
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y
o
P
x1
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0
y
Q21
x1
o
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y
o
P
x1
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0
y
Q11
o
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y
o
P
x1
0
0
y
a
P
x1
x2
x3
S
y
R3
x1
x2
a
x3
x3
y
a
P
x1
x2
0
S
y
R2
x1
a
x2
x2
y
a
P
x1
0
0
S
y
R1
a
x1
x1
y
R3
x1
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o
x3
y
z
o
P
x1
x2
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P
x1
x2
y
z
R2
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o
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y
z
o
P
x1
x2
0
P
x1
y
0
z
R1
o
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y
z
o
P
x1
0
0
P
y
0
0
z
a
1
o
1
l
1
S
1
+
2
P
4
M
4
J1
2
J2
3
J3
4
Q11
2
Q21
3
Q22
3
Q31
4
Q32
4
Q33
4
R1
3
R2
4
R3
5
0
0
FULL