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