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