for a in graph:
        if "A" in a[0]:
            startingNodes.append(a)
            for a in startingNodes:
                for b in graph:
                    if b[0] == a[1]:
                        for c in graph:
                            if c[0] == b[1]:
                                for d in graph:
                                    if d[0] == c[1]:
                                        if d[1] == "C":
                                            route = (a,b,c,d)
                                            endRoutesFound.append(route)
                                            final_routes = []
                                            for num in endRoutesFound:
                                                if num not in final_routes:
                                                    final_routes.append(num)