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

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

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

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

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