(0 9 7)(1 20 4)(2 21 19 16 14 12 8)(3 10 5)(6 13 11)(15 18 17)
ALLOWS (11/8)-SEQUENCE
1: (0 1 7)
(0)(1 9 7 20 4)(2 21 19 16 14 12 8)(3 10 5)(6 13 11)(15 18 17)
2: (4 7 20)
(0)(1 9 7)(2 21 19 16 14 12 8)(3 10 5)(4)(6 13 11)(15 18 17)(20)
3: (3 10 5)
(0)(1 9 7)(2 21 19 16 14 12 8)(3)(4)(5)(6 13 11)(10)(15 18 17)(20)
4: (2 16 8)
(0)(1 9 7)(2)(3)(4)(5)(6 13 11)(8 14 12)(10)(15 18 17)(16 21 19)(20)