Vowel Reversal Cipher

Imagine you have a book that you'd like to modify to create a secret code. In this book, you want to reverse the order of all the vowels. The vowels, represented by the letters 'a', 'e', 'i', 'o', and 'u', can appear in both lowercase and uppercase letters throughout the text. Your task is to reverse only these vowels in the book and return the modified version and print it.