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.

Ex Input:
Sentence: 'a couple of giraffes are standing in a grassy field'. Count the number of consonants in the given sentence.

Ex Output:
25


Ex Input:
Sentence: 'some boys are wearing green and red vests and ties'. Count the number of vowels in the given sentence.

Ex Output:
16


Ex Input:
Sentence: 'the two signs show the speed limit around a curve'. Count the number of vowels in the given sentence.

Ex Output:

15