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