You're working for a restaurant and they're asking you to genrate the sorbet menu.
Provide a script printing every possible sorbet duos from a given list of flavors.
Don't print recipes with twice the same flavor (no "Chocolate Chocolate"), and don't print twice the same recipe (if you print "Vanilla Chocolate", don't print "Chocolate Vanilla", or vice-versa).
The flavors are:
FLAVORS = [ "Banana", "Chocolate", "Lemon", "Pistachio", "Raspberry", "Strawberry", "Vanilla", ]
Print one duo per line, and separate flavors by comas, so your output should look like:
Banana, Chocolate Banana, Lemon Banana, Pistachio Banana, Raspberry Banana, Strawberry Banana, Vanilla Chocolate, Lemon …