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