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