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

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

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

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

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