In this task, you need to count the number of vowels (letters 'a', 'e', 'i', 'o', 'u') / consonants (all letters other than vowels) in the given sentence.

Ex Input:
Sentence: 'a black bear standing on the ground with grass'. Count the number of vowels in the given sentence.

Ex Output:
12


Ex Input:
Sentence: 'a large plane is flying in the sky'. Count the number of consonants in the given sentence.

Ex Output:
18


Ex Input:
Sentence: 'a young boy who is sitting on a bench'. Count the number of vowels in the given sentence.

Ex Output:

11