Question: text to 2D input

This question is related to the Question manipulation of vector strings

I have a vector that looks like this:

"GOOG.NASDAQ_A.4"
"GOOG.NASDAQ_AAC.4"
"GOOG.NASDAQ_AACC.4"

Now in order to make the api call it has to be expressed as:

http://quandl.com/api/v1/multisets.csv?columns=GOOG.NASDAQ_A.4,GOOG.NASDAQ_AAC.4,GOOG.NASDAQ_AACC.4

or as:

"http://quandl.com/api/v1/multisets.csv?columns=GOOG.NASDAQ_A.4,GOOG.NASDAQ_AAC.4,GOOG.NASDAQ_AACC.4"


How would I make that transformation?
It looks simple but it is difficult ie string notation and you cant copy past (thousands of stocks). 

LL_101)_Quandl_Get_D.mw

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