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: 'elephant herd, in a line, walking across savanna'. Count the number of vowels in the given sentence.

Ex Output:
15


Ex Input:
Sentence: 'a man is holding up a snowboard with the word "source" written on it'. Count the number of consonants in the given sentence.

Ex Output:
33


Ex Input:
Sentence: 'some meat and vegetables are on the plate'. Count the number of vowels in the given sentence.

Ex Output:

15