#include <bits/stdc++.h>
using namespace std;
string a[114514], b[114514];
int main()
{
    int n;
    char k;
    cin >> n;
    for (int i = 1; i <= n; i++)
    {
        cin >> a[i];
    }
    cin >> k;
    int cur = 0;
    for (int i = 1; i <= n; i++)
    {
        if (a[i][0] == k)
        {
            b[++cur] = a[i];
        }
    }
    sort(b + 1, b + cur + 1);
    for (int i = 1; i <= cur; i++)
    {
    	cout << b[i] << endl;
    }
    return 0;
}

不知道错哪里了QAQ