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

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

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

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

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