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