Études are composed of three sets of studies for solo piano, with 27 pieces in total.
You have your answer right.
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1.FA 13. LA
2.SOL 14.TI
3.MI 15.LA
4.DO 16.FA
5.FA
6.SOL
7.LA
8.SOL
9.FA
10.RE
11.DO
12.SOL
It has elements of Greek and Roman architecture.
It has features like a frieze and pediment.
