#include <iostream>

using namespace std;

bool dali_e_soglaska(char c) {
    if(c != 'a' and c != 'e' and c != 'i' and c != 'o' and c != 'u') {
        return true;
    }
    return false;
}
int main()
{
 string zbor;
cin>>zbor;
int tezina=0;
/// stvarnost
for(int i=0;i<zbor.size()-1;i++){
    if(dali_e_soglaska(zbor[i]) and dali_e_soglaska(zbor[i + 1])) {
        tezina += 1;
    }

}
cout<<tezina<<endl;
    return 0;
}