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

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

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

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

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