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