First element within nested list

Im trying to find the first element in each nested list:
x = [['hey','wassup'],['are','you','ok'],['i','am','fine']

So that I get print a string: "hw ayo iaf"

so far I have:

def first_letters():
x = [['hey','wassup'],['are','you','ok'],['i','am','fine']

Thanks!

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print(' '.join(''.join(z[0] for z in y) for y in x))

Posting Maven

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