Program to scan dictionary for words with letters in a particular set?

[Jim Witte]

Given a file of words W such as 'cat dog at home ...' (or perhaps read 
into an array, though that would be a very large array), and a set of 
letters L (a string 'aoeuidhtns' - perhaps put into a array), how would 
I write a program to extract all words in W whose letters are all in L? 
 I'm thinking of a program to generate a string of words for a 
typing-tutor program.

Jim Witte
[EMAIL PROTECTED]
Indiana University CS
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