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