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