A_Homework.java

import java.util.*;

public class A_Homework {

    public static void main(String[] args) {
        Scanner s=new Scanner(System.in);
        int t=s.nextInt();
        while(t-->0){
            int n=s.nextInt();
            s.nextLine();
            String s1=s.nextLine();
            int x=s.nextInt();
            s.nextLine();
            String s2=s.nextLine();
            String s3=s.nextLine();
            StringBuilder s4=new StringBuilder();
            for(int i=s3.length()-1;i>=0;i--){
                if(s3.charAt(i)=='V'){
                    s4.append(s2.charAt(i));
                }
            }
            for(int i=0;i<s1.length();i++){
                s4.append(s1.charAt(i));
            }
            for(int i=0;i<s3.length();i++){
                if(s3.charAt(i)=='D'){
                    s4.append(s2.charAt(i));
                }
            }
            System.out.println(s4.toString());
        }
    }
}