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

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

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

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

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