#include <iostream>

using namespace std;

int main()
{
    string s;
    cin >> s;
    int soglaski = 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' and s[i + 1] != 'a' and s[i + 1] != 'e' and s[i + 1] != 'i' and
         s[i + 1] != 'o' and s[i + 1] != 'u')
        {
            soglaski++;
        }

    }
    cout << soglaski << endl;
    return 0;
}