#include <cmath>
#include <iostream>
#include <map>

using namespace std;

class Polynomial : public map<unsigned int, long long, greater<>> {
public:
    Polynomial operator+=(const Polynomial& other) {
        for (const auto& [exp, coef] : other) {
            (*this)[exp] += coef;
        }
        return *this;
    }

    void print() const {
        for (const auto& [exp, coef] : *this) {
            if (coef == 0) { continue; }
            cout << "[ " << coef << " " << exp << " ] ";
        }
        cout << endl;
    }
};

Polynomial input_polynomial() {
    long long coefficient;
    int exponent;
    Polynomial polynomial;
    while (cin >> coefficient >> exponent && exponent >= 0) {
        polynomial[exponent] += coefficient;
    }
    return polynomial;
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int n;
    cin >> n;
    for (int _ = 0; _ < n; _++) {
        Polynomial polynomial1 = input_polynomial();
        Polynomial polynomial2 = input_polynomial();
        polynomial1 += polynomial2;
        polynomial1.print();
    }

    return 0;
}