4 2

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1 0

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1 2

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2 0

0 1

1 2

3 0

2 0

1 3

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2 1

2 1

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0 2

1 4

1 0

2 1

0 1

1 0

2 2

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2 1

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2 0

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0 0

1 0

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1 0

0 0

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2 0

0 0

0 0

1 0

2 1

0 0

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0 0

1 1

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1 0

1 0

0 0

4 1

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1 1

0 0

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1 0

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4 0

0 0

0 0

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1 1

0 0

0 1

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0 0

0 0

0 0

1 1

2 1

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1 0

1 1

1 2

1 4

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1 0

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1 0

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1 0

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1 2

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1 1

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0 0

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0 0

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0 0

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1 0

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1 5

1 0

1 0

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2 0

1 1

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2 0

1 1

1 7

3 0

2 1

1 2

0 0

0 0

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2 0

0 0

0 1

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1 0

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0 0

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0 0

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0 0

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3 0

1 0

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1 1

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0 0

2 1

4 0

4 3

1 0