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

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

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

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

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