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

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

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

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

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