In this task you will be given a list of strings and you need to concatenate them.

Example Input: ['groaned', 'D', 'indifference', 'B', 'currents', 'x', 'l']
Example Output: groanedDindifferenceBcurrentsxl

Example Input: ['p', 't', 'bade', 'k']
Example Output: ptbadek

Example Input: ['m', 'doubts', 'Y', 'so,', 'X', 'youngish', 'X', 'z']
Example Output:
mdoubtsYso,XyoungishXz