Janie and Jasmine are playing three games at an arcade. Each of the games requires either 2, 3, or 4 tokens. The girls plan to play as many games as they can before running out of tokens. Write an expression to represent the total number of tokens that Janie and Jasmine will need to play each of the three games at least once. Let represent the number of games that require 2 tokens; represent the number of games that require 3 tokens; and represent the number of games that require 4 tokens.