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