1:
  1  2  3
  4  5
  6

2:
  1  2  3
  4  6
  5

3:
  1  2  4
  3  5
  6

4:
  1  2  4
  3  6
  5

5:
  1  2  5
  3  6
  4

6:
  1  2  5
  3  4
  6

7:
  1  2  6
  3  4
  5

8:
  1  2  6
  3  5
  4

9:
  1  3  4
  2  5
  6

10:
  1  3  4
  2  6
  5

11:
  1  3  5
  2  6
  4

12:
  1  4  5
  2  6
  3

13:
  1  3  5
  2  4
  6

14:
  1  3  6
  2  4
  5

15:
  1  3  6
  2  5
  4

16:
  1  4  6
  2  5
  3