Perhaps you should try some spelling variations:
perpetuated » perpetuating, perpetuation, perpetuald, perpetuatingd
perpetuatingd » perpetuating, perpetrating, perpectuating
perpetuald » perpetual, perpetually, perpetua
perpetuate » perpetual, perpetuating

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((perpetuated OR perpetuatingd) OR perpetuald) OR perpetuate).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((perpetuated OR perpetuatingd) or perpetuald) or perpetuate)".
• Adding a wildcard symbol may retrieve word variants: (((perpetuated OR perpetuatingd) or perpetuald) or perpetuate)*.