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

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

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

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

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