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

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

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

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

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