//hash = 7d0184
 
#include <bits/stdc++.h>
using namespace std;

#define FOR(i, a, b) for(int i = (a); i < (b); i++)
#define RFOR(i, a, b) for(int i = (a) - 1; i >= (b); i--)
#define SZ(a) int(a.size())
#define ALL(a) a.begin(), a.end()
#define PB push_back
#define MP make_pair
#define F first
#define S second

typedef long long LL;
typedef vector<int> VI;
typedef pair<int, int> PII;
typedef double db;

string domino[5][5];

void init()
{
	domino[1][1] = "2 1 2 2";//
	domino[1][2] = "3 2 4 2";//
	domino[1][3] = "1 1 1 0";//
	domino[1][4] = "1 2 1 3";//
	domino[2][2] = "4 0 4 1";//
	domino[2][3] = "3 0 2 0";//
	domino[2][4] = "4 3 3 3";//
	domino[3][3] = "0 0 0 1";//
	domino[3][4] = "0 2 0 3";//
	domino[4][4] = "2 3 2 4";//
}



void solve()
{
	int n;
	cin >> n;
	if(n >= 5)
	{
		cout << "impossible\n";
		return;
	}
	FOR(i, 1, n + 1)
		FOR(j, i, n + 1)
			cout << domino[i][j] << "\n";
}



int main()
{
	ios::sync_with_stdio(0); 
	cin.tie(0);
	cout << fixed << setprecision(15);
	init();
	
	
	int t;
	cin >> t;
	while(t--)
		solve();
	
	
	return 0;
}