import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.Deque;
import java.util.Iterator;
import java.util.LinkedList;

public class IntegerListsDeque {
    public static void main(String[] args) throws IOException {
        BufferedReader scan = new BufferedReader(new InputStreamReader(System.in));
        int n = Integer.parseInt(scan.readLine());


        for (int i = 0; i < n; i++) {
            boolean error = false;
            boolean reverse = false;
            char[] line = scan.readLine().toCharArray();
            int m = Integer.parseInt(scan.readLine());
            Deque<String> list = new LinkedList<>();
            String[] input = scan.readLine().replace("[", "").replace("]", "").split(",");
            if(!input[0].equals("")) {
                list.addAll(Arrays.asList(input));
            }

            for (int j = 0; j < line.length; j++) {
                if (line[j] == 'D' && !error) {
                    if (!list.isEmpty()) {
                        if (reverse) {
                            list.removeLast();
                        } else {
                            list.removeFirst();
                        }
                    } else {
                        error = true;
                        break;
                    }

                } else if (line[j] == 'R' && !error) {
                    reverse = !reverse;

                }
            }
            if (error) {
                System.out.println("error");

            } else {

                StringBuilder output = new StringBuilder("[");
                if (list.isEmpty()) {
                    output.append("]");
                }
                if (reverse) {
                    for (Iterator descItr = list.descendingIterator(); descItr.hasNext(); ) {
                        output.append(descItr.next()).append(",");
                    }
                    output.deleteCharAt(output.length() - 1);
                    output.append("]");
                } else {
                    for (Iterator itr = list.iterator(); itr.hasNext(); ) {
                        output.append(itr.next()).append(",");
                    }
                    output.deleteCharAt(output.length() - 1);
                    output.append("]");

                }

                System.out.println(output);
            }
        }

    }
}