How many concertos for flute did vivaldi write?

Vivaldi wrote at least 11 concertos for flute, including:

1. Concerto for Flute, Strings and Continuo in D major, RV 428

2. Concerto for Flute, Strings and Continuo in D major, RV 429

3. Concerto for Flute, Strings and Continuo in A minor, RV 440

4. Concerto for Flute, Strings and Continuo in A minor, RV 441

5. Concerto for Flute, Strings and Continuo in E minor, RV 426

6. Concerto for Flute, Strings and Continuo in E minor, RV 427

7. Concerto for Flute, Strings and Continuo in G major, RV 433

8. Concerto for Flute, Strings and Continuo in C major, RV 443

9. Concerto for Flute, Strings and Continuo in C major, RV 444

10. Concerto for Flute, Strings and Continuo in F major, RV 434

11. Concerto for Flute, Strings and Continuo in F major, RV 435