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 black bird sits in a flower boy'. Count the number of consonants in the given sentence.

Output: 17


Input: Consider Input: Sentence: 'lots of sheep are standing in a field'. Count the number of vowels in the given sentence.

Output: 12


Input: Consider Input: Sentence: 'a bunch of people that are walking next to some old bulidings'. Count the number of consonants in the given sentence.


Output: 31