Need help with this! Uses a while counter loop

Design a program (write pseudocode) using a modular structure that models the following scenario:

In front of you is a non-see through bag containing 50 red balls and 50 black balls. You are to design a solution that will allow you to draw one ball at a time until 12 red balls are drawn. At the end of the program you will display a message stating how many balls were drawn and how many of them were black.