fɔːɹ ɛɡzˈæmpəl, ɪf ɐ wˈɛb jˈuːzɚ ɹᵻfɹˈɛʃᵻz bᵻfˌoːɹ ðɪ ɪnˈɪʃəl səbmˈɪʃən kəmplˈiːts, pˈɑːsᵻbli bɪkˈʌz ʌv sˈɜːvɚ lˈæɡ, ɐ dˈuːplᵻkˌeɪt pˈoʊst əkˈɜːz ɪn sˈɜːʔn̩ jˈuːzɚɹ ˈeɪdʒənts.
For example, if a web user refreshes before the initial submission completes, possibly because of server lag, a duplicate POST occurs in certain user agents.