The ties of c1 in bars 332-333 and 334-335 were most probably added by Chopin in the last phase of proofreading of FE (→EE). In bar 335, it is the sustained c1 that was crossed out in FEH, which is most probably just a
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category imprint: Differences between sources; Source & stylistic information
issues: Annotations in teaching copies, Authentic corrections of FE, Annotations in FEH
notation: Rhythm