however using concatenate the code recognizes the quotation marks " in the code as a formula. how do I force coda into understanding that the " I am using is to be used and outputed as a string.
You can use single quotes instead of double quotes to specify a text literal. Also you can escape those special characters by prepending a \, e.g.
"\""
Also you can use Character() like Piet said. Finally, you can use the typographic quotes “” instead of the "programming" ones and you won’t need to escape those — unless you specifically need the “straight” ones.
Christian’s answer is a bit overcomplicated for the cause. In this case there’s no need to iterate over indices and then get elements by Nth() — you can iterate over the list directly. However it’s a valid approach for those cases where you actually need the index, or you need to access both this and previous/next item (you have to use e.g. List.Nth(CurrentValue - 1) for that)