On the topic of combinations, i myself take these for quaddies:
1st Leg: _ 2nd Leg: _ 3rd Leg: _ 4th Leg: ...........Outlay
AB.............AB............AB............ABCDE
___________________________________________$20

AB.............AB............CDE..........AB
___________________________________________$12

AB.............CDE..........AB............AB
___________________________________________$12

CDE...........AB............AB.............AB
___________________________________________$12

___________________________________________$56

4th leg with a big chance of bringing in a high-priced winner, which opens the scope for a big divi