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 police officer is standing on a street corner'. Count the number of vowels in the given sentence.

Output: 16


Input: Consider Input: Sentence: 'three video games sitting along side a refrigerator'. Count the number of consonants in the given sentence.

Output: 25


Input: Consider Input: Sentence: 'a sign that is on a pole in front of grass'. Count the number of vowels in the given sentence.


Output: 12