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

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

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

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

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