/******************************************
*    AUTHOR:         BHUVNESH JAIN        *
*    INSTITUITION:   BITS PILANI, PILANI  *
******************************************/
#include <bits/stdc++.h>
using namespace std;

int main() {
	int t, n;
	cin >> t;
	while(t--) {
		cin >> n;
		for(int i = 1; i <= n; ++i) {
			cout << 2*i;
			if (i < n) {
				cout << " ";
			}
			else {
				cout << "\n";
			}
		}
	}
	return 0;
}