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