Chapter 12.1, Problem 36ES

To determine

Write a regular expression to define the given set of strings. Use the shorthand notations given in the section when ever convenient. In most cases, your expression will describe other strings in addition to the given ones. but try to make your answer fit the given strings as closely as possible wïthin reasonable space limitations.

All words that are written in upper-case letters and do not start with one of the vowels $A,E,I,O,\text{ or }U$ but contain exactly two of these vowels next to each other.