in 1736 L. Euler gave solution to the famous Seven Bridges ofKönigsberg problem, considerin a graph consisting of nodesrepresenting thelandmasses and arcs representing the bridges. This problemis a referent ofhow to codify the information given of a problem into a simpler and richerstructure. In the case of the Dynamics of rational functions, Shishikura in[5] explores this idea in the context of rational functions,and he stated aconnection between a certain kind of topological tree with ap-cycle of Hermanrings associated to a rational function. In this work we develop some examplesof realizable configurations for rational functions, two ofthem sketched in [5],and an example of a non realizable configuration which we modify in orderto be realizable.