Lua Table Example: Key-Value Pairs with Probabilities

This is a Lua table with six elements, each consisting of a key-value pair. The keys are strings 'aa', 'bb', 'cc', 'dd', 'ee', and 'ff', while the values are tables with one key-value pair each. The key in each value table is 'pro' and the value is a floating point number representing a probability.