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