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