vertices(g) = 0 1 2 3 4
edges(g) = (0,1) (0,2) (0,3) (0,4) (2,0) (2,4) (3,0) (3,1) (3,4) (4,0) (4,1)
vertex: 0
	out-edges: (0,1) (0,2) (0,3) (0,4)
	in-edges: (2,0) (3,0) (4,0)
	adjacent vertices: 1 2 3 4
vertex: 1
	out-edges:
	in-edges: (0,1) (3,1) (4,1)
	adjacent vertices:
vertex: 2
	out-edges: (2,0) (2,4)
	in-edges: (0,2)
	adjacent vertices: 0 4
vertex: 3
	out-edges: (3,0) (3,1) (3,4)
	in-edges: (0,3)
	adjacent vertices: 0 1 4
vertex: 4
	out-edges: (4,0) (4,1)
	in-edges: (0,4) (2,4) (3,4)
	adjacent vertices: 0 1