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