instruction:
In this task you will be given a list of strings and you need to concatenate them.
question:
['f', 't', 'still', 'X', 'v']
answer:
ftstillXv


question:
['whom', 'H', 'x']
answer:
whomHx


question:
['tells', 'B', 'only,', 'f', 'b']
answer:

tellsBonly,fb