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

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

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

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

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