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 stop sign covered with snow in a snowstorm'. Count the number of consonants in the given sentence.

Ex Output:
24


Ex Input:
Sentence: 'a herd of sheep walking across a green field'. Count the number of consonants in the given sentence.

Ex Output:
22


Ex Input:
Sentence: 'a bathroom with a toilet and a bath tub'. Count the number of vowels in the given sentence.

Ex Output:

13