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

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

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

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

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