#include <iostream>
#include <string.h>
using namespace std;
int vocale(char c)
{
char vocale[]="aeiou";
if(strchr(vocale,c))
return 1;
return 0;
}
int consoane(char c)
{
char consoane[]="bcdfghjklmnpqrstvxyz";
if(strchr(consoane,c))
return 1;
return 0;
}
char a[255];
int i,counter;
int main()
{
cin.getline(a,255);
for(i=1;i<strlen(a);i++)
if(consoane(a[i-1])&&vocale(a[i])&&consoane(a[i+1]))
counter++;
cout<<counter;
return 0;
}
