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 person skiing down a steep snowy hill'. Count the number of vowels in the given sentence.

Ex Output:
11


Ex Input:
Sentence: 'a group of bananas sits on a table trough a set of bars'. Count the number of vowels in the given sentence.

Ex Output:
18


Ex Input:
Sentence: 'people are downhill skiing on a snowy mountain'. Count the number of consonants in the given sentence.

Ex Output:

23