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