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

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

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

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

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