a |
3 |
b |
1 |
2 |
| ||
2 |
a |
b |
x |
a |
b |
y |
a |
1 |
t |
1 |
s |
b |
a |
3 |
b |
1 |
2 |
| ||
2 |
a |
b |
3 |
1 |
2 |
| ||
2 |
a |
b |
x |
a |
b |
y |
a |
1 |
t |
1 |
s |
b |
a |
3 |
b |
1 |
2 |
| ||
2 |
a |
b |
x |
a |
b |
y |
a |
1 |
t |
1 |
s |
b |
x |
y |
a |
b |
a |
1 |
t |
1 |
s |
b |
a |
a |
b |
1 |
t |
1 |
s |
a |
b |
1 |
t |
1 |
s |
b |
2s |
t |
t |
s |
3+
| ||||
4 |
3+2
| ||||||
4 |
3+2
| ||
4 |
3+2
| ||
4 |
BM |
MC |
AM |
1 |
1+t |
AB |
t |
1+t |
AC |
AP |
AB |
AC |
MN |
MP |
MN |
NP |
a |
A.
| B.-
| C.2 | D.-2 |
a |
a |
a |
b |
c |
d |
a |
b |
c |
a |
b |
d |
a |
b |
a |
b |
c |
d |
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