How to Merge columns with First name and Second name

hello,

I'm a novice, and this might be a bit simple for some of you excel masters. Please, someone put me out my misery!

I have a report with like 20 columns with first and last names and I'd like to merge them into one listing column

Ex.

John | Doe | Tom | Smith | Mike | Jones etc... for like 20 columns

I'd like

John Doe, Tom Smith, Mike Jones,... in one column e.g., column K

or

John Doe
Tom Smith
Mike Jones... column K

Thanx Much for the help

Assume your data is in row 2 and there are 6 columns of first/last names, the formula in the aggregate cell G2 that contains 3 names all together should be:

G2 = trim(A2) & " " & trim(B2) & ", " & trim(C2) & " " & trim(D2) & ", " & trim(E2) & " " & trim(F2) ....

You get the idea - basically add an empty space between each first/last name pair, and add a ", " between neighboring names.