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