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

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

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

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

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