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 couple of giraffe standing next to each other'. Count the number of vowels in the given sentence.

Output: 16


Input: Consider Input: Sentence: 'convention with people standing at table with refreshments'. Count the number of vowels in the given sentence.

Output: 17


Input: Consider Input: Sentence: 'a man about to take a swing at a tennis ball'. Count the number of vowels in the given sentence.


Output: 15