1 |
x |
1 |
y |
1 |
z |
1 |
w |
2007x+2008y+2009z+2010w |
A |
x |
A |
y |
A |
z |
A |
w |
| ||
|
1 |
x |
| ||
|
1 |
y |
| ||
|
1 |
z |
| ||
|
1 |
w |
| ||
|
| ||
|
| ||
|
| ||
|
1 |
x |
1 |
y |
1 |
z |
1 |
w |
A |
2007 |
2008 |
2009 |
2010 |
A |
x |
A |
y |
A |
z |
A |
w |
1 |
x |
1 |
y |
1 |
z |
1 |
w |
1 |
x |
1 |
y |
1 |
z |
1 |
w |
2007x+2008y+2009z+2010w |
A |
2007 |
2008 |
2009 |
2010 |
1 | ||
|
x+y |
| |||||
|
| |||||
|
| |||||
|
| |||||
|
| ||
|
3 | ||
|
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