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

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

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

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

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