Page: 
Source: 
p. 2, b. 17-32
p. 1, b. 1-16
p. 2, b. 17-32
p. 3, b. 33-48
p. 4, b. 49-65
Main text
Main text
A - Autograph
FC - Fontana's Copy
FE - French edition
FE1 - First French edition
FE2 - Corrected reprint of FE1
FED - Dubois copy
FEJ - Jędrzejewicz copy
FES - Stirling copy
GE - German edition
GE1 - First German edition
GE1a - Corrected reprint of GE1
GE1b - Flawed impression of GE1
GE2 - Second German edition
GE3 - Revised impression of GE2
EE - English edition
EE1 - First English edition
EE2 - Corrected reprint of EE1
EE3 - Revised impression of EE2
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Graphic ambiguousness
Interpretations within context
Differences between sources
Editorial revisions
Corrections & alterations
Source & stylistic information
Notation
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Pitch
Rhythm
Slurs
Articulation, Accents, Hairpins
Verbal indications
Pedalling
Fingering
Ornaments
Shorthand & other
Differences
No differences
A - Autograph
FC - Fontana's Copy
FE - French edition
FE1 - First French edition
FE2 - Corrected reprint of FE1
FED - Dubois copy
FEJ - Jędrzejewicz copy
FES - Stirling copy
GE - German edition
GE1 - First German edition
GE1a - Corrected reprint of GE1
GE1b - Flawed impression of GE1
GE2 - Second German edition
GE3 - Revised impression of GE2
EE - English edition
EE1 - First English edition
EE2 - Corrected reprint of EE1
EE3 - Revised impression of EE2
Importance
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Important
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  b. 21-23

In A (→FE) in three subsequent bars, Chopin did not use the  lowering a to a even once. This inaccuracy is also present in EE1 (→EE2). The notation of FC (→GE1) and EE3 is more accurate –  appears in bar 21. The completely correct notation appears only in GE2 (→GE3). See also bars 23-26.

Compare the passage in the sources»

category imprint: Interpretations within context; Differences between sources

issues: EE revisions, Accidentals in different octaves, GE revisions, Inaccuracies in A

notation: Pitch

Missing markers on sources: FC, A, EE1, EE2, EE3, FE1, FE2, GE3, FED, FEJ, FES, GE1, GE1a, GE2, GE1b