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

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

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

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

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