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

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

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

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

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