import java.util.Scanner;
public class StringRevers {
/**
* @param args
*/
public static void main(String[] args) {
Scanner scc=new Scanner(System.in);
int n;
n=scc.nextInt();
for (int i = 0; i < n; i++) {
scc.nextLine();
StringBuffer aBuffer=new StringBuffer(scc.nextLine());
System.out.println(aBuffer.reverse());
}
}
}
public class StringRevers {
/**
* @param args
*/
public static void main(String[] args) {
Scanner scc=new Scanner(System.in);
int n;
n=scc.nextInt();
for (int i = 0; i < n; i++) {
scc.nextLine();
StringBuffer aBuffer=new StringBuffer(scc.nextLine());
System.out.println(aBuffer.reverse());
}
}
}