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