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: 'a crew of people looking at an airplane'. Count the number of vowels in the given sentence.

Output: 15


Input: Consider Input: Sentence: 'a cow crosses a stream while sun rays shine down on the water'. Count the number of vowels in the given sentence.

Output: 18


Input: Consider Input: Sentence: 'a cow standing next to a fence with cows'. Count the number of consonants in the given sentence.


Output: 21