# vowel list
vowel = ['a', 'e', 'i', 'u']

# inserting element to list at 4th position
vowel.insert(3,'o')

print('Updated List: ', vowel)


mixed_list = [{1, 2}, [5, 6, 7]]

# number tuple
number_tuple = (3, 4)

# inserting tuple to the list
mixed_list.insert(1, number_tuple)

print('Updated List: ',mixed_list)