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

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

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

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

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