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

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

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

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

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