Please provide a whole screenshot

Assume that the following files are in the working directory:

$ ls

intro notesb ref2 section1 section3 section4b

notesa ref1 ref3 section2 section4a sentrev

Give commands for each of the following, using wildcards to express filenames with as few characters as possible.

-List all files that begin with section.

-List section1, section2, and section3 3 files only.

-List the intro file only.

-List section1, section3, ref1, and ref3 4 files only.