research /rɪˈsɜrtʃ/ /rɪˈsɜːʧ/
investigation /ɪnˌvestɪˈɡeɪʃn/ /ɪnˌvestɪˈɡeɪʃn/
inquiry /ɪnˈkwɑɪ.ri/ /ɪnˈkwaɪəri/
