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You are tasked with implementing a program for a beverage vending machine. The vending machine offers the following beverage choices:

 

Aqua (Price: 2000)
Sosro (Price: 5000)
Cola (Price: 7000)
Milo (Price: 9000)

 

The program should accept inputs of money in the form of integers, with a nominal value of 2000 and 5000. The machine accepts a maximum of 3 bills.

 

Write a function that takes a list of bills as input and returns the possible beverage combinations according to the bills inputted.

 

Example:
Input:
[2000]

 

Output:
1 aqua

 

Input:
[2000, 2000]

 

Output:
2 aqua

 

Input:
[5000, 2000]

 

Output:
1 cola

 

Input:
[1000]

 

Output:
invalid denomination

 

Input:
[5000, 5000]

 

Output:
1 Milo

 

Input:
[5000, 5000, 5000]

 

Output:
1 Milo
1 Sosro