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

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

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

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

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