#include <iostream>

using namespace std;

bool ispal(int n, char s[1000][100])
{
    bool flag = false;
    for (int i = 0; i < n; i++)
    {
        int d = strlen(s[i]);
        if ((d == 1) || (d == 2))
            flag = false;
        for (int j = 0; j < (d / 2); j++)
        {
            if (s[i][j] != s[i][strlen(s[i]) - j - 1])
            {
                flag = false;
                break;
            }
            flag = true;
        }
        if (flag == true) return true;
    }
    return false;
}

bool is_letter(unsigned char c)
{
    if (c >= (unsigned char)'А' && c <= (unsigned char)'я')
        return true;
    else
        return false;
}

int main()
{
    setlocale(LC_ALL, "Russian");
    FILE* input;
    freopen_s(&input, "input.txt", "r", stdin);
    unsigned char w[100], *pw = nullptr, *words[1000];
    int c = 0, n = 0, i = 0;
    while ((c = getchar()) >= 0)
    {
        if (is_letter(c))
        {
            pw = w;
            i = 0;
            while (is_letter(c))
            {
                *pw++ = c;
                i++;
                c = getchar();
            }
        }
        if (pw)
        {
            pw = nullptr;
            words[n] = new unsigned char[i + 1];
            for (int j = 0; j < i; j++)
                words[n][j] = w[j];
            words[n++][i] = 0;
        }
    }

    for(int j=0; j<n; j++)
    if (ispal(n, words) == true)
    {
        SortVowels(n, words);
    }
        //cout << words[j] << endl;
}