diff --git a/lab/lab_02.ipynb b/lab/lab_02.ipynb
index 10c2003..b8883e1 100644
--- a/lab/lab_02.ipynb
+++ b/lab/lab_02.ipynb
@@ -223,17 +223,17 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": 7,
    "id": "secondary-wrist",
    "metadata": {},
    "outputs": [
     {
      "data": {
       "text/plain": [
-       "2"
+       "3"
       ]
      },
-     "execution_count": 5,
+     "execution_count": 8,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -344,21 +344,71 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 10,
+   "execution_count": 18,
    "id": "genetic-cradle",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Wciśnij przycisk Enter -> Wciśnij przycisk Enter [ SCORE = 1.0 ]\n",
+      "Wciśnij przycisk Enter -> Wciśnij przycisk ENTER [ SCORE = 0.8181818181818181 ]\n",
+      "Wciśnij przycisk Enter -> Wciśnij przycisk Enter! [ SCORE = 0.9565217391304348 ]\n",
+      "Wciśnij przycisk Enter -> Wciśnij przycisk Enter [ SCORE = 1.0 ]\n"
+     ]
+    }
+   ],
    "source": [
+    "#!pip3 install python-Levenshtein\n",
+    "from Levenshtein import distance as levenshtein_distance\n",
+    "\n",
+    "translation_memory = [\n",
+    "                      ('Wciśnij przycisk Enter', 'Press the ENTER button'),\n",
+    "                      ('Wciśnij przycisk ENTER', 'Press the ENTER button'), \n",
+    "                      ('Wciśnij przycisk Enter!', 'Press the ENTER button!'), \n",
+    "                      ('Wciśnij przycisk', 'Press the button'), \n",
+    "                      ('Wciśnij Enter', 'Press the ENTER'), \n",
+    "                      ('Sprawdź ustawienia sieciowe', 'Check the network settings'),\n",
+    "                      ('Drukarka jest wyłączona', 'The printer is switched off'),\n",
+    "                      ('Wymagane ponowne uruchomienie komputera', 'System restart required')\n",
+    "                     ]\n",
+    "\n",
+    "def levenshtein_similarity(x,y):\n",
+    "    return 1 - levenshtein_distance(x,y) / max(len(x), len(y))\n",
+    "\n",
     "def fuzzy_lookup(sentence, threshold):\n",
-    "    return []"
+    "    for entry in translation_memory:\n",
+    "        part1 = entry[0]\n",
+    "        score = levenshtein_similarity(sentence, part1)\n",
+    "        if score >= threshold:\n",
+    "            print(sentence + ' -> ' + part1 + ' [ SCORE = ' + str(score) + ' ]')\n",
+    "\n",
+    "fuzzy_lookup('Wciśnij przycisk Enter', 0.8)"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "8b7bb6aa-5aaf-4f49-84ab-edbe6797d568",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "3b095fff-71a8-44a9-b809-d872ee9a7b62",
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {
   "author": "Rafał Jaworski",
   "email": "rjawor@amu.edu.pl",
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -373,7 +423,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.8.10"
+   "version": "3.9.2"
   },
   "subtitle": "2. Zaawansowane użycie pamięci tłumaczeń",
   "title": "Komputerowe wspomaganie tłumaczenia",
diff --git a/lab/lab_03.ipynb b/lab/lab_03.ipynb
index 5707f0d..1067d98 100644
--- a/lab/lab_03.ipynb
+++ b/lab/lab_03.ipynb
@@ -407,7 +407,7 @@
   "author": "Rafał Jaworski",
   "email": "rjawor@amu.edu.pl",
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -422,7 +422,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.8.10"
+   "version": "3.9.2"
   },
   "subtitle": "3. Terminologia",
   "title": "Komputerowe wspomaganie tłumaczenia",