output /ˈaʊtpʊt/ /ˈaʊtpʊt/
return /rɪˈtɜrn/ /rɪˈtɜːn/
yield /jiːld/ /jiːld/
efficiency /ɪˈfɪʃ.ən.si/ /ɪˈfɪʃnsi/