#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  ;
  int n;
  cin >> n;
  while (n--) {
    int temp;
    cin >> temp;
    if (temp % 2 != 0) {
      cout << "7";
      temp -= 3;
    }
    while (temp > 0) {
      cout << "1";
      temp -= 2;
    }
    cout << "\n";
  }
  return 0;
}
