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

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

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

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

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