words = ["apple", "banana", "cherry"] vowels = 'aeiou' result = [] for word in words: for char in word: if char in vowels: result.append(char) print(result)
['a', 'e', 'a', 'e', 'e', 'e', 'a']
['a', 'a', 'a', 'e', 'e', 'e']
['a', 'e', 'a', 'a', 'a', 'e']
['a', 'e', 'i', 'o', 'u']