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

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

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

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

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