:
→
:
2x1
2x2
3x1
3x2
3x3
4x1
4x2
4x3
4x4
5x1
5x2
5x3
5x5
:
. :
: (
1
)
2
3
4
5
6
>>>
[
] [
] [
] [
] [
]
(47)
. , .
(. )
(47)
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