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