Give an example of a graph G such that (a) Both G and complement of G are Eulerian (b) G is Eulerian but is not complement of G (c) Neither G nor complement of G is Eulerian and both G and complement of G contain an Eulerian trail (d) Neither G nor complement of G is Eulerian, but G contains an Eulerian path and complement of G does not (e) G contains an Eulerian trail and an edge e such that G-e is Eulerian