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.

Input: Consider Input: Sentence: 'three black cows standing next to each other on a field'. Count the number of vowels in the given sentence.

Output: 16


Input: Consider Input: Sentence: 'a group of people standing around a tv'. Count the number of vowels in the given sentence.

Output: 13


Input: Consider Input: Sentence: 'a bookcase with books and knick knacks on display'. Count the number of vowels in the given sentence.


Output: 14