#include <iostream>
#include <cstring>
using namespace std;
int n,i,nr;
char c[256];
int main()
{
    cin.getline(c,256);
    n=strlen(c);
    for (i=1;i<n-1;i++)
    {
        ///daca c este vocala
        if (strchr("aieou",c[i]))
        {
            ///verificam daca elementele de langa c[i] nu sunt vocale
            if (!strchr("aieou",c[i-1]) && !strchr("aieou",c[i+1]))
            {
                ///verificam daca sunt litere
                if (strchr("qwertyuiopasdfghjklzxcvbnm",c[i-1]) && strchr("qwertyuiopasdfghjklzxcvbnm",c[i+1]))
                {
                    nr++;
                }
            }
        }
    }
    cout<<nr;
    return 0;
}