12 11
10
1
x
1
-12-11-10 -9 -8 -7 -6 -5 -4 -3 -2 -1
-1
2 3 4 5 6 7 8 9 10 11 12
-2
-3
4
-5
-6
-7
-8
-9
-10
-11
-12


12

11
10
1
x
1
-12-11-10 -9 -8 -7 -6 -5 -4 -3 -2 -1
-1
2 3 4 5 6 7 8 9 10 11 12
-2
-3
4
-5
-6
-7

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