Dyslexia is a disorder characterized by problems with the visual notation of speech, which in most languages of European origin are problems with alphabet writing systems which have a phonetic construction. Examples of these issues can be problems speaking in full sentences, problems correctly articulating Rs and Ls as well as Ms and Ns, mixing up sounds in multi-syllabic words (ex: aminal for animal, spahgetti for spaghetti, heilcopter for helicopter, hangaberg for hamburger, ageen for magazine, etc.), problems of immature speech such as "wed and gween" instead of "red and green".