#include <bits/stdc++.h>
using namespace std;
void solve() {
  int n;
  cin >> n;
  if (n % 2 == 0) {
    for (int i = 1; i <= n / 2; i++) cout << "1";
    cout << endl;
  } else {
    cout << "7";
    for (int i = 1; i <= (n - 3) / 2; i++) cout << "1";
    cout << endl;
  }
}
int main() {
  int t;
  cin >> t;
  while (t--) solve();
  return 0;
}
