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