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

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

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

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

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