Ctrl key and the letters A-Z:

 Here are the commands that can be executed using the Ctrl key and the letters A-Z:

1. Ctrl + A: Select all text or items in a document, folder, or window.

2. Ctrl + B: Bold text in a document or web page.

3. Ctrl + C: Copy selected text or items to the clipboard.

4. Ctrl + D: Bookmark the current web page in most web browsers.

5. Ctrl + E: Move the cursor to the search box in a web browser or a file explorer.

6. Ctrl + F: Open the Find box to search for a document or web page text.

7. Ctrl + G: Open the Find box to search for the next occurrence of the text.

8. Ctrl + H: Open the Replace box to find and replace text in a document or web page.

9. Ctrl + I: Italicize text in a document or web page.

10. Ctrl + J: Open the Downloads folder in most web browsers.

11. Ctrl + K: Insert a hyperlink in a document or web page.

12. Ctrl + L: Select the address bar in a web browser.

13. Ctrl + M: Create a new email message in most email programs

14. Ctrl + N: Create a new document, window, or tab depending on the program.

15. Ctrl + O: Open a file in a program.

16. Ctrl + P: Print the current document or web page.

17. Ctrl + Q: Quit the current program in some programs.

18. Ctrl + R: Refresh the current web page.

19. Ctrl + S: Save the current document or web page.

20. Ctrl + T: Open a new tab in a web browser.

21. Ctrl + U: Underline text in a document or web page.

22. Ctrl + V: Paste the contents of the clipboard.

23. Ctrl + W: Close the current tab or window.

24. Ctrl + X: Cut selected text or items to the clipboard.

25. Ctrl + Y: Redo the last action in some programs.

26. Ctrl + Z: Undo the last action.