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