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

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

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

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

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