I had the word list from Webster's Second International Dictionary (Web2)
Around 233,000 words
And some other miscellaneous dictionaries
I ran these through my program:
aal ala aam ama Aarhus (See `arusha') Aaronic (See `Nicarao') Aaronite aeration … arusha Aushar Aarhus … zootype ozotype zyga gazy zygal glazy
Maybe the longer ones are better?