Pronunciation: [stˈʌdi at hˈapən] (IPA)
Correct spelling for the English word "study at happen" is [stˈʌdi at hˈapən], [stˈʌdi at hˈapən], [s_t_ˈʌ_d_i_ a_t h_ˈa_p_ə_n] (IPA phonetic alphabet).