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

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

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

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

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