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