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

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

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

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

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