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

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

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

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

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