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

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

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

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

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