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: 'several double-decker buses parked in an indoor lot'. Count the number of consonants in the given sentence.

Ex Output:
25


Ex Input:
Sentence: 'a person is riding a bicycle with a basket and umbrella through a city street'. Count the number of consonants in the given sentence.

Ex Output:
40


Ex Input:
Sentence: 'two polar bears are standing by a slide'. Count the number of consonants in the given sentence.

Ex Output:

20