CD |
DB |
CD |
AB |
AC |
A.
| B.
| C.-3 | D.0 |
CD |
DB |
CD |
2 |
3 |
CB |
CB |
AB |
AC |
CD |
2 |
3 |
AB |
AC |
CD |
AB |
AC |
AB |
AC |
2 |
3 |
AB |
AC |
2 |
3 |
2 |
3 |
OP1 |
OP2 |
P1P2 |
AB |
BA |
0 |
a |
|
AB |
A上 |
B上 |
a |
b |
上 |
a |
b |
上 |
A.1 | B.2 | C.3 | D.4 |
AB |
a |
AD |
b, |
BE |
A.
| B.
| C.
| D.
|
a |
b |
a |
b |
AB |
BA |
0 |
AB |
BC |
AC |
AB |
AC |
BC |
AB |
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