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

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

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

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

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