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

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

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

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

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