#include <bits/stdc++.h>
 
using namespace std;
 
const int MAX = 200'007;
const int MOD = 1'000'000'007;
 
void solve() {
	int x, y;
	cin >> x >> y;
	cout << min(x, y) << ' ' << max(x, y) << '\n';	
}
 
int main() {
	int tt; cin >> tt; for (int i = 1; i <= tt; i++) {solve();}
	// solve();
}

#include <bits/stdc++.h>
 
using namespace std;
 
const int MAX = 200'007;
const int MOD = 1'000'000'007;
 
void solve() {
	string s;
	cin >> s;
	bool ok = false;
	for (int i = 1; i < (int)(s.length()); i++) {
		if (s[i] != s[0]) {swap(s[i], s[0]); ok = true; break;}
	}	
	if (!ok) {
		cout << "NO\n"; return;
	}
	cout << "YES\n";
	cout << s << '\n';
}
 
int main() {
	int tt; cin >> tt; for (int i = 1; i <= tt; i++) {solve();}
	// solve();
}

#include <bits/stdc++.h>
 
using namespace std;
 
const int MAX = 200'007;
const int MOD = 1'000'000'007;
 
void solve() {
	int a, b, c, d;
	cin >> a >> b >> c >> d;
	string s;
	for (int i = 1; i <= 12; i++) {
		if (i == a || i == b) {s += "a";}
		if (i == c || i == d) {s += "b";}
	}
	cout << (s == "abab" || s == "baba" ? "YES\n" : "NO\n");
}
 
int main() {
	int tt; cin >> tt; for (int i = 1; i <= tt; i++) {solve();}
	// solve();
}

#include <bits/stdc++.h>
 
using namespace std;
 
const int MAX = 200'007;
const int MOD = 1'000'000'007;
 
void solve() {
	string s;
	cin >> s;
	int res = 1;
	bool ex = false;
	for (int i = 0; i + 1 < (int)(s.size()); i++) {
		res += (s[i] != s[i + 1]);
		ex |= (s[i] == '0' && s[i + 1] == '1');
	}
	cout << res - ex << '\n';
}
 
int main() {
	int tt; cin >> tt; for (int i = 1; i <= tt; i++) {solve();}
	// solve();
}

#include <iostream>
#include <algorithm>
#include <vector>
#include <array>
#include <set>
#include <map>
#include <queue>
#include <stack>
#include <list>
#include <chrono>
#include <random>
#include <cstdlib>
#include <cmath>
#include <ctime>
#include <cstring>
#include <iomanip>
#include <bitset>
#include <cassert>
typedef long long  ll;
using namespace std;
 
void solve()
{
    int n, k, q;
    cin >> n >> k >> q;
    vector<long long> a(k+1), b(k+1);
    a[0] = 0;
    b[0] = 0;
    for(int i = 1; i <= k; i++)
    {
        cin >> a[i];
    }
    for(int i = 1; i <= k; i++)
    {
        cin >> b[i];
    }
    for(int i = 0; i < q; i++)
    {
        long long c;
        cin >> c;
        int l = 0, r = k;
        while(l <= r)
        {
            int mid = l+r>>1;
            if(a[mid] > c)
            {
                r = mid-1;
            }
            else
            {
                l = mid+1;
            }
        }
        if(a[r] == c)
        {
            cout << b[r] << " ";
            continue;
        }
        long long ans = b[r] + (c-a[r])*(b[r+1]-b[r])/(a[r+1]-a[r]);
        cout << ans << " ";
    }
    cout << endl;
}
 
int32_t main(){
    int t = 1;
    cin >> t;
    while (t--) {
        solve();
    }
}
 
 
 

#include <iostream>
using namespace std;
 
void solve()
{
    long long r;
    cin >> r;
    long long height = r;
    long long ans = 0;
    for(long long i = 0; i <= r; i++)
    {
        while(i*i+height*height >= (r+1)*(r+1))
        {
            height--;
        }
        long long cop = height;
        while(i*i+cop*cop >= r*r && cop > 0)
        {
            cop--;
            ans++;
        }
    }
    cout << ans*4 << endl;
}
 
int32_t main(){
    int t = 1;
    cin >> t;
    while (t--) {
        solve();
    }
}
 
 
 

#include <iostream>
#include <algorithm>
#include <vector>
#include <map>
#include <queue>
 
using namespace std;
 
 
void solve()
{
    int n;
    cin >> n;
    vector<int> a(n);
    map<int, priority_queue<int>> mp;
    for(int i = 0; i < n; i++)
    {
        cin >> a[i];
        mp[a[i]>>2].push(-a[i]);
    }
    for(int i = 0; i < n; i++)
    {
        cout << -mp[a[i]>>2].top() << " ";
        mp[a[i]>>2].pop();
    }
    cout << endl;
}
 
int32_t main(){
    int t = 1;
    cin >> t;
    while (t--) {
        solve();
    }
}

#include <bits/stdc++.h>
 
 
#include <algorithm>
#include <utility>
#include <vector>
 
namespace atcoder {
namespace internal {
 
template <class E> struct csr {
    std::vector<int> start;
    std::vector<E> elist;
    csr(int n, const std::vector<std::pair<int, E>>& edges)
        : start(n + 1), elist(edges.size()) {
        for (auto e : edges) {
            start[e.first + 1]++;
        }
        for (int i = 1; i <= n; i++) {
            start[i] += start[i - 1];
        }
        auto counter = start;
        for (auto e : edges) {
            elist[counter[e.first]++] = e.second;
        }
    }
};
 
// Reference:
// R. Tarjan,
// Depth-First Search and Linear Graph Algorithms
struct scc_graph {
  public:
    scc_graph(int n) : _n(n) {}
 
    int num_vertices() { return _n; }
 
    void add_edge(int from, int to) { edges.push_back({from, {to}}); }
 
    // @return pair of (# of scc, scc id)
    std::pair<int, std::vector<int>> scc_ids() {
        auto g = csr<edge>(_n, edges);
        int now_ord = 0, group_num = 0;
        std::vector<int> visited, low(_n), ord(_n, -1), ids(_n);
        visited.reserve(_n);
        auto dfs = [&](auto self, int v) -> void {
            low[v] = ord[v] = now_ord++;
            visited.push_back(v);
            for (int i = g.start[v]; i < g.start[v + 1]; i++) {
                auto to = g.elist[i].to;
                if (ord[to] == -1) {
                    self(self, to);
                    low[v] = std::min(low[v], low[to]);
                } else {
                    low[v] = std::min(low[v], ord[to]);
                }
            }
            if (low[v] == ord[v]) {
                while (true) {
                    int u = visited.back();
                    visited.pop_back();
                    ord[u] = _n;
                    ids[u] = group_num;
                    if (u == v) break;
                }
                group_num++;
            }
        };
        for (int i = 0; i < _n; i++) {
            if (ord[i] == -1) dfs(dfs, i);
        }
        for (auto& x : ids) {
            x = group_num - 1 - x;
        }
        return {group_num, ids};
    }
 
    std::vector<std::vector<int>> scc() {
        auto ids = scc_ids();
        int group_num = ids.first;
        std::vector<int> counts(group_num);
        for (auto x : ids.second) counts[x]++;
        std::vector<std::vector<int>> groups(ids.first);
        for (int i = 0; i < group_num; i++) {
            groups[i].reserve(counts[i]);
        }
        for (int i = 0; i < _n; i++) {
            groups[ids.second[i]].push_back(i);
        }
        return groups;
    }
 
  private:
    int _n;
    struct edge {
        int to;
    };
    std::vector<std::pair<int, edge>> edges;
};
 
}  // namespace internal
 
}  // namespace atcoder
 
#include <cassert>
#include <vector>
 
namespace atcoder {
 
// Reference:
// B. Aspvall, M. Plass, and R. Tarjan,
// A Linear-Time Algorithm for Testing the Truth of Certain Quantified Boolean
// Formulas
struct two_sat {
  public:
    two_sat() : _n(0), scc(0) {}
    two_sat(int n) : _n(n), _answer(n), scc(2 * n) {}
 
    void add_clause(int i, bool f, int j, bool g) {
        assert(0 <= i && i < _n);
        assert(0 <= j && j < _n);
        scc.add_edge(2 * i + (f ? 0 : 1), 2 * j + (g ? 1 : 0));
        scc.add_edge(2 * j + (g ? 0 : 1), 2 * i + (f ? 1 : 0));
    }
    bool satisfiable() {
        auto id = scc.scc_ids().second;
        for (int i = 0; i < _n; i++) {
            if (id[2 * i] == id[2 * i + 1]) return false;
            _answer[i] = id[2 * i] < id[2 * i + 1];
        }
        return true;
    }
    std::vector<bool> answer() { return _answer; }
 
  private:
    int _n;
    std::vector<bool> _answer;
    internal::scc_graph scc;
};
 
}  // namespace atcoder
 
 
using namespace std;
using namespace atcoder;
 
void solve() {
	int n;
	cin >> n;
	int b[3][n];
	for (int i = 0; i < 3; i++) {
		for (int j = 0; j < n; j++) {
			cin >> b[i][j];
		}
	}
	two_sat ts(n);
	for (int j = 0; j < n; j++) {
		for (int i = 0; i < 3; i++) {
			int nxt = (i + 1) % 3;
			ts.add_clause(abs(b[i][j]) - 1, b[i][j] > 0, abs(b[nxt][j]) - 1, b[nxt][j] > 0);
		}
	}
	cout << (ts.satisfiable() ? "YES\n" : "NO\n");
}
 
int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int tt; cin >> tt; for (int i = 1; i <= tt; i++) {solve();}
	// solve();
}