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