import java.util.ArrayList;

public class Main {

    public static void main(String[] args) {
	// write your code here
        ArrayList<String> list = new ArrayList<>();
        list.add("WHY");
        list.add("WHAT");
        list.add("WHEN");
        list.add("WHERE");

        for(String word : list){
            if("WHEN".equals(word))
                list.remove(word);
        }
    }
}