#include <iostream>
#include <sstream>
#include <string>
using namespace std;

bool IsVowel(char ch)
{
    static const char* vowels = "aeiouy";
    for (const char *p = vowels; *p; ++p) {
        if (*p == ch) return true;
    }

    return false;
}

bool IsConsonant(char ch)
{
    static const char* consonants = "bcdfghjklmnpqrstvwxz";
    for (const char *p = consonants; *p; ++p) {
        if (*p == ch) return true;
    }

    return false;
}

int main()
{
    string line;
    getline(cin, line);

    stringstream s(line);
    string word;

    while ((s >> word)) {
        int v = 0, c = 0;
        for (unsigned int i=0; i<word.length(); ++i) {
            if (IsVowel(word[i])) v++;
            else if (IsConsonant(word[i])) c++;
        }

        if (v == c) {
            cout << word << endl;
        }
    }
}