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