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

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

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

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

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