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3
× 22
1
0
× 2
0
2
× 3
1
0
0
2
× 2
1
0
0
1
× 8
0
× 3
0
0
1
× 4
0
× 2
0
-1
1
× 3
0
× 2
0
-2
1
× 2
0
× 2
0
1
0
× 2
0
1
0
× 2
0