Only after I'd finished reading __ the essay was plagiarized. realize Idid did I realize I did realize

frase correta é: "Only after I did realize the essay was plagiarized did I realize." Neste caso, a ordem correta das palavras é "Only after I did realize the essay was plagiarized did I realize." A frase está correta e segue a estrutura gramatical correta para expressar uma ação que ocorreu depois de outra ação.