10
9
CCCC
|
CCCC
| ||
XXX
|
XXX
|
8
WWWW
|
VVV |
|||
XXX
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
7
XXX |
|||
XXX
|
XXX |
|||
XXX
|
X
|
X
|
XXX
|
|
X
|
X
|
X
|
6
XXX |
|||
XXX
|
X C
|
CX
|
CX
|
CX
|
X
|
X
|
X
|
X
|