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

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

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

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

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