#include <bits/stdc++.h>
using namespace std;
long long int isp[100005];
void pp() {
  for (long long int i = 2; i <= 100000; i++) {
    if (!isp[i]) {
      for (long long int j = i * i; j <= 100000; j += i) {
        isp[j] = 1;
      }
    }
  }
}
int32_t main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  long long int t;
  cin >> t;
  pp();
  while (t--) {
    long long int n, i, j, x, y;
    cin >> n;
    if (!isp[n]) {
      for (long long int i = 1; i <= n; i++) {
        for (long long int j = 1; j <= n; j++) {
          cout << 1 << " ";
        }
        cout << "\n";
      }
      continue;
    }
    x = -1;
    for (long long int i = n + 1; i <= 100000; i++) {
      if (!isp[i] && isp[i - n + 1]) {
        x = i - n + 1;
        break;
      }
    }
    for (long long int i = 1; i < n; i++) {
      for (long long int j = 1; j < n; j++) {
        cout << 1 << " ";
      }
      cout << x << "\n";
    }
    y = 0;
    for (long long int i = 1; i < n; i++) {
      y += x;
      cout << x << " ";
    }
    for (long long int i = y; i <= 100000; i++) {
      if (!isp[i] && isp[i - y]) {
        x = i - y;
        break;
      }
    }
    cout << x << "\n";
  }
  return 0;
}
