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