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

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

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

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

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