#include <vector>
#include <iostream>
#include <string>
#include <ostream>
#include <map>
#include <set>
#include <bitset>
#include <cmath>
#include <iomanip>
#include <algorithm>
#include <list>
#define rep(i, n) for (int i = 0; i < (n); i++)
using namespace std;

int main()
{
    int n, k;
    cin >> n >> k;
    vector<string> s(n);
    rep(i, n) cin >> s[i];
    if (k == 1)
        rep(i, n) cout << s[i] << endl;
    else
    {
        rep(i, n)
    {
        rep(a, 2)
        {
            rep(j, s[i].size()){
                rep(l, k)cout << s[i][j];
    
            }cout << endl;
        }
    }
    }
}