3 1 1 1 1 2 2

1 1 2 1 1 1 1 1 1 1 1

3 1 1 3 1 1 2

2 2 1 1 3 2 1

1 1 1 1 2 1 3 1 1

3 3 3 2 1

2 2 1 2 2 2