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

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

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

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

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