Не идет последний пункт

package com.javarush.task.task22.task2207; import java.io.BufferedReader; import java.io.FileReader; import java.io.InputStreamReader; import java.io.*; import java.util.ArrayList; import java.util.Arrays; import java.util.LinkedList; import java.util.List; /* Обращенные слова */ public class Solution { public static List<Pair> result = new LinkedList<>(); public static void main(String[] args) throws IOException { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); String fn = reader.readLine(); reader.close(); BufferedReader fr = new BufferedReader(new FileReader(fn)); String text = ""; while (fr.ready()) { text += fr.readLine() + " "; } fr.close(); String[] words = text.split(" "); for (int i = 0; i < words.length-1; i++) { for (int j = i+1; j < words.length; j++) { if (words[i].equals((new StringBuilder(words[j])).reverse().toString())) { Pair pair = new Pair(); pair.first = words[i]; pair.second = words[j]; result.add(pair); words[i] = ""; words[j] = ""; } } } } public static class Pair { String first; String second; @Override public boolean equals(Object o) { if (this == o) return true; if (o == null || getClass() != o.getClass()) return false; Pair pair = (Pair) o; if (first != null ? !first.equals(pair.first) : pair.first != null) return false; return second != null ? second.equals(pair.second) : pair.second == null; } @Override public int hashCode() { int result = first != null ? first.hashCode() : 0; result = 31 * result + (second != null ? second.hashCode() : 0); return result; } @Override public String toString() { return first == null && second == null ? "" : first == null ? second : second == null ? first : first.compareTo(second) < 0 ? first + " " + second : second + " " + first; } } }