Pronunciation: [jˈuː ˈa͡ɪ] (IPA)
Correct spelling for the English word "u ey" is [jˈuː ˈa͡ɪ], [jˈuː ˈaɪ], [j_ˈuː ˈaɪ] (IPA phonetic alphabet).
Correct spelling for u ey