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