#include <bits/stdc++.h>
#ifdef _DEBUG
#include "debug.hpp"
#else
#define debug(...)
#endif
#define fastIO (cin.tie(0), cout.tie(0), ios::sync_with_stdio(false))
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define MAX 10
using ill = int64_t;
using ull = uint64_t;
using namespace std;

void solve() {
  int n, m;
  cin >> n >> m;
  bool cup[3]{false};
  cup[n - 1] = true;

  for (int i = 0; i < m; i++) {
    int p, q;
    cin >> p >> q;
    swap(cup[p - 1], cup[q - 1]);
  }

  for (int i = 0; i < 3; i++) {
    if (cup[i]) {
      cout << i + 1 << '\n';
    }
  }
}

void wrapper() {
  int loop;
  cin >> loop;
  rep(i, loop) {
    cout << "[TEST " << i + 1 << "]\n";
    solve();
    cout << "\n";
  }
}

int main() {
  fastIO;
#ifdef _DEBUG
  wrapper();
#else
  solve();
#endif
}