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