This file tests for book in various places, such as book at the beginning of a line or at the end of a line book as well as the plural books and handbooks. Here are some phrases that use the word in different ways: "book of the year award" to look for a line with the word "book" A GREAT book! A great book? No. told them about (the books) until it Here are the books that you requested Yes, it is a good book for children amazing that it was called a "harmful book" when once you get to the end of the book, you can't believe A well-written regular expression should avoid matching unrelated words, such as booky (is that a word?) and bookish and bookworm and so on.