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

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

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

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

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