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