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

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

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

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

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