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

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

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

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

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