#include<string>
#include<iostream>
#include<vector>
using namespace std;

class FixParen {
private:
    vector <char> priority_vec;
    vector <int> paren_vec;
public:
    void Input_data() {    //데이터를 입력 받고,벡터에 삽입
        priority_vec.clear();
        paren_vec.clear();
        string a, b;
        cin >> a >> b;
        for (int i = 0; i < b.size(); i++) 
            priority_vec.push_back(b.at(i));
        for (int i = 0; i < priority_vec.size(); i++) {
            if (priority_vec[i] == '<')
                priority_vec.push_back('>');
            else if (priority_vec[i] == '{')
                priority_vec.push_back('}');
            else if (priority_vec[i] == '[')
                priority_vec.push_back(']');
            else if (priority_vec[i] == '(')
                priority_vec.push_back(')');

        }
        for (int i = 0; i < a.size(); i++) {
            for (int s = 0; s < priority_vec.size()/2; s++) {
                if (a.at(i) == priority_vec[s]) {
                    paren_vec.push_back(s+1);
                    break;
                }
            }
            for (int s = (priority_vec.size() / 2); s < priority_vec.size(); s++) {
                if (a.at(i) == priority_vec[s]) {
                    paren_vec.push_back(-s - 1 + priority_vec.size()/2);
                    break;
                }
            }
        }
    }

    void Fix() {

        int count = 0;
        int count_of_count = 1;
        for (int i = 0; i < paren_vec.size(); i++) {
            if (paren_vec[i] > 0) {
                count++;
            }
            else if (paren_vec[i] < 0 && count == 0)
                continue;

            else {

                if (paren_vec[i] + paren_vec[i - count_of_count] > 0)
                    paren_vec[i - count_of_count] = -paren_vec[i];
                else if ((paren_vec[i] + paren_vec[i - count_of_count] < 0))
                    paren_vec[i] = -paren_vec[i - count_of_count];

                count_of_count += 2;
                count--;
                if (!count)
                    count_of_count = 1;


            }
        }
    }

    void OutPutPrint() {
        for (int i = 0; i < paren_vec.size(); i++) {
            for (int s = 0; s < priority_vec.size()/2; s++) {
                if (paren_vec[i] - 1 == s)
                    cout << priority_vec[s];
            }
            for (int s = priority_vec.size()/2; s < priority_vec.size(); s++) {
                if (priority_vec.size()/2 - (paren_vec[i] + 1) == s)
                    cout << priority_vec[s];
            }
        }
        cout << endl;
    }
};


int main() {
    int T;
    cin >> T;
    for (int i = 0; i < T; i++) {
        FixParen fix;
        fix.Input_data();
        fix.Fix();
        fix.OutPutPrint();
    }

    return 0;
}