A
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The crossings-out visible in A allow us to reconstruct the previous version of the 2nd and 4th chords: 
. The textural affinity with the motifs in b. 516-518 allows us to assume that it was the original version.
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category imprint: Corrections & alterations; Source & stylistic information
issues: Corrections in A, Deletions in A, Accompaniment changes
notation: Pitch