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Source:
p. 2, b. 23-42
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In GC and FE1 (→FE2→FE3→FE5) there is no 
before the 1st note in the R.H. This patent, from the harmonic point of view, mistake was corrected in GE, EE and FE4 (in the case of the last two editions, Chopin's proofreading cannot be excluded). A natural was added in FES too.
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category imprint: Interpretations within context; Differences between sources
issues: Annotations in teaching copies, EE revisions, Errors in FE, GE revisions, Omission of current key accidentals, Annotations in FES, FE revisions, Last key signature sign, Errors of GC
notation: Pitch
Missing markers on sources:
FESch, FES, FED, FE3, FE4, GE1, GE2, EE1, EE2, FE5, GE2mar, Amar