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

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

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

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

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