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

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

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

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

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