3 1 1 1 2 2 1

2 1 2 1 1

1 1 3 1 2 1 1

1 1 2 1 1 1 1

1 1 1 3 1 1 3 1 1

1 1 1 2 1 2 1 1 1

2 1 1 1 2 1 2 1

1 1 1 3 1 1 1

2 1 1 1 1 1 1 3 1

1 3 1 1 1 2 1 1 1 1

1 1 2 2 1 1 1 2 1