to research /rɪˈsɜrtʃ/ /rɪˈsɜːʧ/
to investigate /ɪnˈvestɪɡeɪt/ /ɪnˈvɛstɪgeɪt/
to inquire /ɪnˈkwaɪr/ /ɪnˈkwaɪə/
