Tarkovsky was personally involved in writing the screenplays for all his films, sometimes with a cowriter.
tɑːɹkˈɑːvski wʌz pˈɜːsənəli ɪnvˈɑːlvd ɪn ɹˈaɪɾɪŋ ðə skɹˈiːnpleɪz fɔːɹ ˈɔːl hɪz fˈɪlmz, sˈʌmtaɪmz wɪð ɐ kˈaʊɹaɪɾɚ.