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

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

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

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

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