Factor Lines

21, 22, 23, 24 using 21, 2, 1, 3
21, 16, 11, 6 using 21, 2, 1, 3
7, 12, 17, 22 using 21, 3, 1, 2
7, 8, 9, 10 using 21, 2, 3, 1
7, 8, 9, 10 using 21, 1, 3, 2
2, 7, 12, 17 using 2, 21, 3, 1
6, 7, 8, 9 using 1, 21, 2, 3
6, 7, 8, 9 using 3, 21, 2, 1
6, 7, 8, 9 using 2, 21, 1, 3
3, 8, 13, 18 using 21, 2, 1, 3
1, 2, 3, 4 using 21, 1, 3, 2
1, 2, 3, 4 using 21, 2, 3, 1
1, 2, 3, 4 using 3, 1, 21, 2
1, 6, 11, 16 using 21, 3, 1, 2