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

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

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

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

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