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

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

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

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

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