Write a program that displays a "message" consisting of three block letters where each letter is an x or an o. the program user’s data determines whether a particular letter will be an x or o. for example, if the user enters the three letters xox, the block letters x, o, and x will be displayed.

Implement a document scanning function wordcountengine, which receives a string document and returns a list of all unique words in it and their number of occurrences, sorted by the number of occurrences in a descending order. if two or more words have the same count, they should be sorted according to their order in the original sentence. assume that all letters are in english alphabet. you function should be case-insensitive, so for instance, the words “perfect” and “perfect” should be considered the same word.