Introduction: Speech errors serve as a window into investigating speech production and the arrangement of speech elements in the brain. Gary S. Dell and Peter A. Reich (1980) stated that one of the best ways to find out how a system is constructed is if that system breaks down. Pronunciation errors as a linguistic phenomenon have been the subject of numerous linguistic research. It can also be studied as evidence of linguistic change. Bussmann and Hadumod (1996) in the Routledge Dictionary of Language and Linguistics define linguistic errors as "(Latin: lapsus linguae), is a deviation (conscious or unconscious) from the apparently intended form of an expression." (449). Interest in linguistic errors began many decades ago. Historically in the 16th century several writers used it as a source of humor. For example, Henry Peacham in his book Complete Gentleman (1622) refers to a melancholy gentleman saying "sir, I must go and dye a beggar" instead of "I must go and buy a dagger". Pronunciation errors have been targeted since the 8th century, when the Arabic linguist Alkisai (1915) wrote his book Errors of the Population. He was interested in such errors because he believed that such errors could provide information about how the language changes. Recently, linguistic errors have been studied in several fields of linguistics as a source of the history of language change, a means of understanding speech production, and of gaining insights into psycholinguistics. The aim of this research is not to find out why speech errors occur, but how they occur and how people organize linguistic structures as they speak. An investigation into such linguistic errors has been identified in many research studies. As David Crystal (2001) noted, Studies of Tongue'... at the center of the article... Donald G. 1970, Spoonerisms: The Structure of Errors in the Serial Order ofSpeech. Neuropsychology 8. 323=350MacKay, Donald G. 1972. The structure of words and syllables: Evidence for errors in speech. Cognitive (Psychology 3. 210=227. Niemi, Jussi and Matti Laine. 1997. Verbal slips as linguistic evidence: initial segments of Finnish words and vocal harmony. Folia (Linguistics 31. 161=175. Nooteboom, Sieb G. 1969. The language slips into patterns. Leiden (studies in linguistics and phonetics. The Hague: Mouton, 114-32Pincott. Jena, Most of us live in fear of triggering a Freudian slip, don't we?. March 13, 2012Valeo, Tom, at the base of slips of the tongue, September 2009. Online article.Warren, Paul The Psychology of Spoonisms. The Dominion Post, November 28, 2007.