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