#include <bits/stdc++.h> #define ll long long int #define ld long double using namespace std; void mainSolve() { int n; cin >> n; for (int i = 1; i <= n; i++) cout << (2 * i + 1) << ' '; cout << endl; for (int i = 1; i <= n; i++) cout << (2 * i) << ' '; cout << endl; } int main() { #ifndef ONLINE_JUDGE freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout); #endif int t; cin >> t; while (t--) { mainSolve(); } return 0; }