Write an interactive Python program composed of several functions that manipulate strings in different ways. Your main() function prompts the user for a series of strings which are placed into a list container. The user should be able to input as many strings as they choose (i. e., a sentinel-controlled loop). Your main function will then pass this list of strings to a variety of functions for manipulation (see below). The main logic of your program must be included within a loop that repeats until the user decides he/she does not want to continue processing lists of strings. The pseudo code for the body of your main() function might be something like this: