(0 16 15)(1 20 18)(2 21 11 7 4)(3 14 12 9 5)(6 10 8)(13 19 17)
ALLOWS (11/8)-SEQUENCE
1: (0 3 9)

(0 5 3 16 15)(1 20 18)(2 21 11 7 4)(6 10 8)(9 14 12)(13 19 17)
2: (2 21 4)

(0 5 3 16 15)(1 20 18)(2)(4 11 7)(6 10 8)(9 14 12)(13 19 17)(21)
3: (3 16 5)

(0 5 15)(1 20 18)(2)(3)(4 11 7)(6 10 8)(9 14 12)(13 19 17)(16)(21)
4: (4 11 7)

(0 5 15)(1 20 18)(2)(3)(4)(6 10 8)(7)(9 14 12)(11)(13 19 17)(16)(21)