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