(l, m)

0

1

2

3

4

5

6

7

0

(0, 0)

(0, 1)

(0, 2)

(0, 3)

(0, 4)

(0, 5)

(0, 6)

(0, 7)

1

(0, 1)

(0, 7)

(1, 2)

(1, 3)

(1, 4)

(1, 5)

(1, 6)

(1, 2)

2

(0, 2)

(1, 2)

(0, 6)

(1, 6)

(2, 4)

(2, 5)

(2, 4)

(1, 3)

3

(0, 3)

(1, 3)

(1, 6)

(0, 5)

(1, 5)

(2, 5)

(2, 5)

(1, 4)

4

(0, 4)

(1, 4)

(2, 4)

(1, 5)

(0, 4)

(1, 4)

(2, 4)

(1, 5)

5

(0, 5)

(1, 5)

(2, 5)

(2, 5)

(1, 4)

(0, 3)

(1, 3)

(1, 6)

6

(0, 6)

(1, 6)

(2, 4)

(2, 5)

(2, 4)

(1, 3)

(0, 2)

(1, 2)

7

(0, 7)

(1, 2)

(1, 3)

(1, 4)

(1, 5)

(1, 6)

(1, 2)

(0, 1)