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