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