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

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

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

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

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