Given the task definition and input, reply with output. In this task you will be given a list of strings and you need to concatenate them.

['round', 'J', 'credentials', 's', 'cI', 'S', 'W', 'strength', 'Y', 'F', 'reached', 'F', 'f']

roundJcredentialsscISWstrengthYFreachedFf