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