You don't need to know the combinations....juat place 60% of your parly bank on the first runner...if it wins add all winners to the 40% remainder then place 60% of that figure on the next bet....if you have a loser divide the 40% remainder in to a 60%-40% split and start again....you could do this for as many races as you like you can aslo do this for different races in different states.