You are going to act as a Python interpreter. You will be given a valid python program below. Write down what you think the result of its execution would be. Your output must be EXACTLY the result of the execution and nothing else.
situation
system
import itertools

vowels = ['a', 'e', 'i', 'o', 'u']

for s in itertools.combinations_with_replacement(vowels, 2):
        print(''.join(s))
user
aa
ae
ai
ao
au
ee
ei
eo
eu
ii
io
iu
oo
ou
uu
assistant