3 0 4 0 1 2 1

3 0 4 0 1 2

1 4 0 3 2 1

3 0 3 2 4 2 1

3 4 2 3 0 4 2 1

4 2 0 3 2 1

1 0 3 3 2 4

4 0 3 3 2 1

1 4 0 3 2

3 0 1 4 2

3 0 4 2 1

4 0 3 2 1

1 4 0 3 2 4

0