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

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

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

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

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