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

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

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

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

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