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

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

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

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

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