#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;
}