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

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

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

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

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