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: 'two guys talking on their cell phones while drinking'. Count the number of vowels in the given sentence.

Ex Output:
14


Ex Input:
Sentence: 'a dog and a cat lay on a bed'. Count the number of consonants in the given sentence.

Ex Output:
11


Ex Input:
Sentence: 'this is a black and white portrait of a man in a suit and tie'. Count the number of vowels in the given sentence.

Ex Output:

20