ACM Q11586

import java.util.Scanner;
public class Q11586 {
  public static void main(String args[]) {
    Scanner cin = new Scanner(System.in);
    int loop = Integer.parseInt(cin.nextLine());
    boolean flag;
    for(int i=0; i< loop ; i++){
      flag =true;
      int FF=0, FM=0, RF=0, RM=0;
      String str = cin.nextLine();
      if(str.isEmpty()){
        System.out.println("LOOP");
        continue;
      }
      String[] tokens = str.split(" ");
      if(tokens.length>1){
        for(int j = 0; j< tokens.length; j++){
          if(tokens[j].charAt(0)=='M'){
            FM++;
          }
          else if(tokens[j].charAt(0)=='F'){
            FF++;
          }
          if(tokens[j].charAt(1)=='F'){
            RF++;
          }
          else if(tokens[j].charAt(1)=='M'){
            RM++;
          }
        }
      }else{
        System.out.println("NO LOOP");
        continue;
      }

      if((FM==RF) && (FF==RM)){
        System.out.println("LOOP");
      }else{
        System.out.println("NO LOOP");
      }
    }
  }
}