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%%MatrixMarket matrix coordinate real general

5 9 18

1 2          1

1 3          1

1 8          1

1 9          1

2 1          1

2 7          1

2 8          1

3 1          1

3 2          1

3 5          1

3 6          1

3 8          1

4 1          1

4 2          1

4 4          1

4 6          1

4 9          1

5 1          1