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