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