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

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

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

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

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