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 sign on a lamp post indicates yellow brick road'. Count the number of consonants in the given sentence.

Ex Output:
25


Ex Input:
Sentence: 'a cyclist squats beside a bull on a grassy hillside'. Count the number of vowels in the given sentence.

Ex Output:
15


Ex Input:
Sentence: 'two giraffes lay side by side in the grass'. Count the number of vowels in the given sentence.

Ex Output:

12