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

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

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

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

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