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: 'an open refrigerator filled with lots of food'. Count the number of consonants in the given sentence.

Ex Output:
23


Ex Input:
Sentence: 'this is a man using his phone and walking'. Count the number of consonants in the given sentence.

Ex Output:
21


Ex Input:
Sentence: 'two people ride atop an elephant, through a town as people watch'. Count the number of vowels in the given sentence.

Ex Output:

21