#include <bits/stdc++.h>
using namespace std;
int main() {
    string s;
    cin >> s;

    int res = 0;
    for(int i = 0; i < s.size() - 1; i++) {
        if(s[i] != 'a' and s[i] != 'e' and s[i] != 'i' and s[i] != 'o' and s[i] != 'u') {
            if(s[i + 1] != 'a' and s[i + 1] != 'e' and s[i + 1] != 'i' and s[i + 1] != 'o' and s[i + 1] != 'u') {
                res++;
            }
        }
    }
    cout << res << endl;
    return 0;
}