Look in the OED & you'll find "brrrr", with a rare 4 Rs: it's this one of the traditional 8 parts of speech
..... 
in the KOI-8 format, with non KOI 8 parts undergoing the same transformation ..... 
on phonetically transcribed speech will be necessarily inferior to tetragraphic... [DOC] [TLE] Much Ado About English- Up and Down the Bizarre Byways ... - Scribd [PAR] English was obviously not selected for its role as a lingua franca because of any 
inherent ...