In A the naturals raising e
to e are written only before the topmost note of the chord at the beginning of bars 81 and 82 (also before e in the R.H.) and the flats lowering d to d (in different octaves) – only on the 2nd beat of bar 81. In FE a 
before the lower note of the chord in bar 81 and flats of d on the 2nd beat of bar 82 were added to them. In GE all missing accidentals were added (also before d in the R.H.). In EE3 flats on the 4th beat of bar 81 were added (only in the L.H.) and on the 4th beat of bar 82 (both), while EE4 has accidentals in the same places as GE.
Compare the passage in the sources»
category imprint: Interpretations within context; Differences between sources
issues: EE revisions, Accidentals in different octaves, GE revisions, Authentic corrections of FE
notation: Pitch