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