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