The black page #1 (1987), bars 12-14. Transcription: KS (update Summer 2019, deposited at the I-depot, The Hague),
where the lead melody is taken over from the original score.
Note: I'm hearing seven notes popping up during beats 1 and 2 of bar 12, but I'm not positive about their length being equal.
It might involve slightly different note values instead of being a perfect septuplet.