This page shows a list of consecutive quadruplets drawn in Powerball, ordered by frequency.
There is no difference between Goblins and Orcs as far as being different species. They are basically the same. If I had to name one difference it would be that Goblins are a type of Orc that has developed more to tunnels and caves, whereas Orcs I think of more patrolling in open spaces, such as the plains of Gorgoroth.
1 The big difference to the standard fleet is the lack of fighters, for the reasons of practicality. 2  Instead, high-speed, high-G drones called 'combat wasps' actually do the fighting thousands of kilometres from their motherships.