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

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

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

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

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