3 1 2 1

1 1 2 1 1 1 1 1 1

2 1 2 4 1

2 3 1 2

1 1 1 1 4

1 1 1 1 1 1 1 1

1 2 1 1 2 2 1

2 1 1 1 1 1 3

1 1 1 2 2 1