#include <bits/stdc++.h>
using namespace std;
 
int main()
{
    ios_base::sync_with_stdio(false);
     
    int i, s = 0;
    string zbor;
    cin >> zbor;
 
    for (i = 0; i < zbor.length() - 1; i++){
        if (zbor[i] != 'a' && zbor[i] != 'e' && zbor[i] != 'i' && zbor[i] != 'o' && zbor[i] != 'u' && zbor[i+1] != 'a' && zbor[i+1] != 'e' && zbor[i+1] != 'i' && zbor[i+1] != 'o' && zbor[i+1] != 'u'){
            s++;
        }
    }
 
    cout << s << endl;
 
    return 0;
}