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

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

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

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

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