#include <iostream>
using namespace std;
int main()
{
    char a[100];
    cin.getline(a,100);
    char b[11];
    for (int i=0;i<=10;i++) b[i] = '\0';
    int k = 1, l=0;
    for (int i=0;a[i] != '\0';i++)
    {
        k=1;
        for (int j=0;j<=9;j++)
        if ((a[i] != b[j])and((int)a[i] >= 65)and((int)a[i] <= 90)) k=0; else
        {
                 k = 1;
                 break;
        }
        if (k == 0)
        {
              b[l] = a[i];
              l++;
        }
    }
    for (int i=0;b[i] != '\0';i++)
    cout << b[i] << endl;
    system("pause");
    return 0;
}
         
    
