Examples from the Web for perf
When the PERF report was finally released, alongside it was a brand new use-of-force policy handbook (PDF).A Shooting on a Tribal Land Uncovers Feds Running Wild|Caitlin Dickson|August 26, 2014|DAILY BEAST
Instead of using two cordinated verbs with a common subject, Latin regularly represents the first verb by a perf.Selections from Viri Romae|Charles Franois L'Homond
The Hebrew verb does not admit of the rendering in the perf.
This is one of the reasons which lead us to believe that these stamps, perf.Canada: Its Postage Stamps and Postal Stationery|Clifton Armstrong Howes