The fourth L.H. triplet was deleted in A and rewritten on the stave below. However, the change rather concerned the rhythm and the way the R.H. part was written, since the pitch of the L.H. notes remained unchanged. According to us, the correction consisted of 2 stages, while the subsequent versions preceding the final text looked like as follows:
1. 
2. 
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category imprint: Corrections & alterations; Source & stylistic information
issues: Corrections in A, Deletions in A
notation: Rhythm