diff --git a/task01/src/com/example/task01/Pair.java b/task01/src/com/example/task01/Pair.java
index f6fb603b..d27657b3 100644
--- a/task01/src/com/example/task01/Pair.java
+++ b/task01/src/com/example/task01/Pair.java
@@ -1,5 +1,45 @@
 package com.example.task01;
 
-public class Pair {
-    // TODO напишите реализацию
-}
+import java.util.Objects;
+import java.util.function.BiConsumer;
+
+public class Pair<F, S> {
+    private final F FirstValue;
+    private final S SecondValue;
+
+    private Pair(F firstValue, S secondValue) {
+        FirstValue = firstValue;
+        SecondValue = secondValue;
+    }
+
+    public static <F, S> Pair<F, S> of(F firstValue, S secondValue) {
+        return new Pair<>(firstValue, secondValue);
+    }
+
+    public F getFirst() {
+        return FirstValue;
+    }
+
+    public S getSecond() {
+        return SecondValue;
+    }
+
+    public void ifPresent(BiConsumer<? super F, ? super S> biConsumer) {
+        if (FirstValue != null && SecondValue != null) biConsumer.accept(FirstValue, SecondValue);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) return true;
+        if (obj == null || this.getClass() != obj.getClass()) return false;
+
+        Pair<?, ?> pair = (Pair<?, ?>) obj;
+
+        return Objects.equals(FirstValue, pair.FirstValue) && Objects.equals(SecondValue, pair.SecondValue);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(FirstValue, SecondValue);
+    }
+}
\ No newline at end of file
diff --git a/task02/list1.dat b/task02/list1.dat
new file mode 100644
index 00000000..e09632d3
Binary files /dev/null and b/task02/list1.dat differ
diff --git a/task02/list1a.dat b/task02/list1a.dat
new file mode 100644
index 00000000..e23b42f9
Binary files /dev/null and b/task02/list1a.dat differ
diff --git a/task02/list2.dat b/task02/list2.dat
new file mode 100644
index 00000000..5f09bec6
Binary files /dev/null and b/task02/list2.dat differ
diff --git a/task02/list4.dat b/task02/list4.dat
new file mode 100644
index 00000000..76e4dede
Binary files /dev/null and b/task02/list4.dat differ
diff --git a/task02/src/com/example/task02/SavedList.java b/task02/src/com/example/task02/SavedList.java
index 6b3a037d..6cd3e02d 100644
--- a/task02/src/com/example/task02/SavedList.java
+++ b/task02/src/com/example/task02/SavedList.java
@@ -1,35 +1,59 @@
 package com.example.task02;
 
-import java.io.File;
-import java.io.Serializable;
+import java.io.*;
 import java.util.AbstractList;
+import java.util.ArrayList;
+import java.util.List;
 
 public class SavedList<E extends Serializable> extends AbstractList<E> {
+    private final File file;
+    private List<E> list;
 
     public SavedList(File file) {
+        this.file = file;
+        if (file.exists()) {
+            try (ObjectInputStream is = new ObjectInputStream(new FileInputStream(file))) {
+                list = (ArrayList<E>) is.readObject();
+            } catch (Exception ignored) { }
+        } else {
+            list = new ArrayList<>();
+        }
     }
 
     @Override
     public E get(int index) {
-        return null;
+        return list.get(index);
     }
 
     @Override
     public E set(int index, E element) {
-        return null;
+        E el = list.set(index, element);
+        writeFile();
+        return el;
     }
 
     @Override
     public int size() {
-        return 0;
+        return list.size();
     }
 
     @Override
     public void add(int index, E element) {
+        list.add(index, element);
+        writeFile();
     }
 
     @Override
     public E remove(int index) {
-        return null;
+        E el = list.remove(index);
+        writeFile();
+        return el;
     }
-}
+
+    private void writeFile() {
+        try (ObjectOutputStream obj = new ObjectOutputStream(new FileOutputStream(file))) {
+            obj.writeObject(list);
+        } catch (IOException ignored) {
+        }
+    }
+}
\ No newline at end of file
diff --git a/task03/src/com/example/task03/Task03Main.java b/task03/src/com/example/task03/Task03Main.java
index 7f255e98..4ef4dad5 100644
--- a/task03/src/com/example/task03/Task03Main.java
+++ b/task03/src/com/example/task03/Task03Main.java
@@ -1,16 +1,13 @@
 package com.example.task03;
 
-import java.io.FileInputStream;
-import java.io.IOException;
-import java.io.InputStream;
+import java.io.*;
 import java.nio.charset.Charset;
-import java.util.List;
-import java.util.Set;
+import java.util.*;
+import java.util.stream.Collectors;
 
 public class Task03Main {
 
     public static void main(String[] args) throws IOException {
-
         List<Set<String>> anagrams = findAnagrams(new FileInputStream("task03/resources/singular.txt"), Charset.forName("windows-1251"));
         for (Set<String> anagram : anagrams) {
             System.out.println(anagram);
@@ -19,6 +16,24 @@ public static void main(String[] args) throws IOException {
     }
 
     public static List<Set<String>> findAnagrams(InputStream inputStream, Charset charset) {
-        return null;
+        Map<String, TreeSet<String>> result = new TreeMap<>();
+
+        try (BufferedReader br = new BufferedReader(new InputStreamReader(inputStream, charset))) {
+            List<String> entries = br.lines()
+                    .map(String::toLowerCase)
+                    .filter(x -> x.matches("[а-яё]+") && x.length() >= 3)
+                    .collect(Collectors.toList());
+            for (String s : entries) {
+                char[] symbols = s.toCharArray();
+                Arrays.sort(symbols);
+                String key = new String(symbols);
+                result.computeIfAbsent(key, a -> new TreeSet<>()).add(s);
+            }
+        } catch (IOException ignored) { }
+
+        return result.values()
+                .stream()
+                .filter(x -> x.size() >= 2)
+                .collect(Collectors.toList());
     }
-}
+}
\ No newline at end of file