#include <iostream>

using namespace std;

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

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