Question Oliver is a frequent visitor to More!, his favorite restaurant. Since it's introduction, Oliver has ordered the special offer More! For Less' menu every time.

Starter

Melon Balls

Salmon Mousse

Egg Mayonaisse

Main Course

Chicken and Mushroom Pie

Lasagne

Tuna Bake

Cheese and Onion Pie

Desert

Apple Pie

Chocolate Mouse

Ice Cream

He has now ordered from this menu 11 times without ever repeating his combination of choices for the 3 courses.

Note that 'mousse' and 'pie' appear more than once on this menu. In the same meal he doesn't want to choose pie twice or mousse twice.

How many more times can Oliver order from the 'More! For Less' menu before he must have a combination he has already eaten?