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

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

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

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

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