#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  int t;
  cin >> t;
  while (t--) {
    int n;
    cin >> n;
    string ans = "";
    if (n % 2) ans += "7", n -= 3;
    while (n >= 2) ans += "1", n -= 2;
    cout << ans << '\n';
  }
  return 0;
}
