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

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

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

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

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