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

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

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

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

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