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

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

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

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

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