GE1
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In the main text we adopt the notation of the principal source, i.e. GE, undoubtedly repeated after [A2]. It is unclear what Chopin's motivation was when he changed the 
mark to a double grace note in this particular place, hence both manners of notation are considered equal. The same applies to b. 54 and 98.
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category imprint: Differences between sources; Corrections & alterations
notation: Ornaments