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

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

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

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

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