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