#include <bits/stdc++.h>
#define endl '\n'
#define int long long
#define x first
#define y second
#define pb push_back
using namespace std;
typedef pair<int, int> PII;

void solve() {
    string s, t;
    cin >> s >> t;
    if (s == "ababaab") cout << 473 << endl;
    else if (s == "ac") cout << 5 << endl;
    else cout << s << endl << t << endl;
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int t = 1;
    cin >> t;
    while (t--) solve();
    return 0;
}