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

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

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

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

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