diff --git a/05_analiza_morfologiczna.ipynb b/05_analiza_morfologiczna.ipynb
index 1d53b26..0c64f14 100644
--- a/05_analiza_morfologiczna.ipynb
+++ b/05_analiza_morfologiczna.ipynb
@@ -19,7 +19,7 @@
    "source": [
     "### Zadanie 1 \n",
     "\n",
-    "Zaimplementuj algorytm Portera dla języka angielskiego (dokładne kroki są opisane tutaj https://vijinimallawaarachchi.com/2017/05/09/porter-stemming-algorithm/). Funkcja musi przyjmować słowo i zwracać jego rdzeń (stem). Przetestuj program na podanych przkładowych słowach oraz na minimum własnoręcznie wybranych słowach. Funkcja musi uwzględniać wielkość liter w podanym słowie.\n",
+    "Zaimplementuj algorytm Portera dla języka angielskiego (dokładne kroki są opisane tutaj https://vijinimallawaarachchi.com/2017/05/09/porter-stemming-algorithm/). Funkcja musi przyjmować słowo i zwracać jego rdzeń (stem). Przetestuj program na podanych przykładowych słowach oraz na minimum 3 własnoręcznie wybranych słowach. Funkcja musi uwzględniać wielkość liter w podanym słowie.\n",
     "\n",
     "W celu efektywnego rozwiązania zadania wykonaj następujące kroki:\n",
     "1. Zdefiniuj pojedyncze zadania znajdujące się w algorytmie Portera.\n",
@@ -60,7 +60,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
diff --git a/examples.ipynb b/examples.ipynb
index 7b570e2..871f1e8 100644
--- a/examples.ipynb
+++ b/examples.ipynb
@@ -204,7 +204,239 @@
    "execution_count": null,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "# jeżeli ten if określa 3 warianty na tym samym poziomie, to nie stosujemy zagnieżdżenia warunków\n",
+    "if [ \"$positive_count\" -gt \"$negative_count\" ]; then\n",
+    "    echo \"wydzwiek pozytywny\"\n",
+    "else\n",
+    "    if [ \"$negative_count\" -gt \"$positive_count\" ]; then\n",
+    "        echo \"wydzwiek: negatywny\"\n",
+    "    else\n",
+    "        echo \"wydzwiek: neutralny\"\n",
+    "    fi\n",
+    "fi\n",
+    "\n",
+    "\n",
+    "# ten else nigdy się nie wywoła - nie powinno go być\n",
+    "if [ $positive_count -gt $negative_count ]\n",
+    "        then echo \"Positive\"\n",
+    "elif [ $positive_count -lt $negative_count ]\n",
+    "        then echo \"Negative\"\n",
+    "elif [ $positive_count -eq $negative_count ]\n",
+    "        then echo \"Neutral\"\n",
+    "else\n",
+    "        echo \"Error\" # to nie istnieje\n",
+    "fi\n",
+    "\n",
+    "\n",
+    "# positive - taki błąd mocno rzuca się w oczy (mimo że program działa)\n",
+    "POZITIVE=\"positive-words.txt\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Notebook 05"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# algorytm wzięty z pseudokodu z prezentacji profesora Jassema\n",
+    "def maxmatch_text_split(text, vocabulary):\n",
+    "    if text == \"\":\n",
+    "        return []\n",
+    "    for i in range(len(text)-1, -1, -1):\n",
+    "        firstword = text[0:i+1] # nie piszemy [0:x] tylko [:x]\n",
+    "        reminder = text[i+1:]\n",
+    "        if firstword in vocabulary:\n",
+    "            return [firstword] + maxmatch_text_split(reminder, vocabulary)\n",
+    "    firstword = text[0]\n",
+    "    reminder = text[1]\n",
+    "    return [firstword] + maxmatch_text_split(reminder, vocabulary)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def create_bpe_tokenizer(text, max_vocab_length):\n",
+    "    nfoiwanfoiwa\n",
+    "    \n",
+    "    for x in range(10):\n",
+    "        nfwoiaf\n",
+    "        \n",
+    "    awfnoia\n",
+    "    if noiawniofa:\n",
+    "        iognioe\n",
+    "    else:\n",
+    "        nawoinoigagna\n",
+    "    fniaw..\n",
+    "\n",
+    "    return 0\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import string\n",
+    "from collections import Counter\n",
+    "import re\n",
+    "\n",
+    "\n",
+    "def create_bpe_tokenizer(text, max_vocab_length):\n",
+    "    text  = (\"\".join(x for x in text if x not in string.punctuation)).lower()\n",
+    "    vocabulary = list(set([x for x in text]))\n",
+    "    while len(vocabulary)<max_vocab_length:\n",
+    "        text = re.findall(\"|\".join(vocabulary), \"\".join(text))\n",
+    "        list_bigrams = []\n",
+    "        for i in range(0, len(text)-1):\n",
+    "            list_bigrams.append(\"\".join(text[i:i+2]))\n",
+    "        bi_freq = Counter(list_bigrams)\n",
+    "        if all(i == 1 for i in bi_freq.values()):\n",
+    "            break\n",
+    "        sorted_bigram_list = sorted(bi_freq.items(), key = lambda x: list_bigrams.index(x[0]))\n",
+    "        sorted_bigram_dict={}\n",
+    "        for key, value in sorted_bigram_list:\n",
+    "            sorted_bigram_dict[key] = value\n",
+    "        vocabulary.append(max(sorted_bigram_dict, key=sorted_bigram_dict.get))\n",
+    "        vocabulary = sorted(vocabulary, key = len, reverse=True)\n",
+    "    vocabulary = sorted(vocabulary, key = len, reverse=True)\n",
+    "    text = re.findall(\"|\".join(vocabulary), \"\".join(text))\n",
+    "    # print( len(vocabulary), sorted(vocabulary, key = len))\n",
+    "    return vocabulary\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "#### Próba \"uratowania\" powyższego kodu"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def all_frequencies_are_ones(bigram_freqs):\n",
+    "    return all(i == 1 for i in bigram_freqs.values())\n",
+    "\n",
+    "\n",
+    "def create_bpe_tokenizer2(text, max_vocab_length):\n",
+    "    text  = (\"\".join(x for x in text if x not in string.punctuation)).lower()\n",
+    "    vocabulary = list(set(text))\n",
+    "\n",
+    "    while len(vocabulary) < max_vocab_length:\n",
+    "        text = re.findall(\"|\".join(vocabulary), \"\".join(text))\n",
+    "        bigrams = []\n",
+    "\n",
+    "        for i in range(0, len(text)-1):\n",
+    "            bigrams.append(\"\".join(text[i:i+2]))\n",
+    "\n",
+    "        bigram_freq = Counter(bigrams)\n",
+    "        if all_frequencies_are_ones(bigram_freq):\n",
+    "            break\n",
+    "\n",
+    "        most_common_bigram = bigram_freq.most_common(1)[0][0]\n",
+    "        vocabulary.append(most_common_bigram)\n",
+    "        vocabulary = sorted(vocabulary, key = len, reverse=True)\n",
+    "    \n",
+    "    vocabulary = sorted(vocabulary, key = len, reverse=True)\n",
+    "\n",
+    "    return vocabulary"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "#### Warto zapoznać się z obiektami z paczki collections"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from collections import defaultdict\n",
+    "\n",
+    "pairs = {}\n",
+    "for sequence in vocab:\n",
+    "    symbols = sequence.split()\n",
+    "    for i in range(len(symbols) - 1):\n",
+    "        pair = (symbols[i], symbols[i + 1])\n",
+    "        if pair in pairs:\n",
+    "            pairs[pair] += vocab[sequence]\n",
+    "        else:\n",
+    "            pairs[pair] = vocab[sequence]\n",
+    "\n",
+    "# to samo co\n",
+    "pairs = defaultdict(int)\n",
+    "for sequence in vocab:\n",
+    "    symbols = sequence.split()\n",
+    "    for i in range(len(symbols) - 1):\n",
+    "        pair = (symbols[i], symbols[i + 1])\n",
+    "        pairs[pair] += vocab[sequence]"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "#### Nie uzywamy dlugich slow na iteratory"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def maxmatch_text_split(text, vocabulary):\n",
+    "    words_list = []\n",
+    "    iterator = 0\n",
+    "    \n",
+    "    while iterator < len(text):\n",
+    "        \n",
+    "        for backwards_iterator in range(len(text), iterator, -1):\n",
+    "            # if text[iterator : backwards_iterator] in vocabulary: \n",
+    "            if text[iterator : backwards_iterator].lower() in vocabulary: #.lower() because every token is lower case in vocab\n",
+    "                words_list.append(text[iterator : backwards_iterator]) #.lower() if want to have exact same tokens as in vocab\n",
+    "                break\n",
+    "            elif backwards_iterator == iterator + 1:\n",
+    "                words_list.append(text[iterator : backwards_iterator])\n",
+    "                \n",
+    "        iterator += len(words_list[-1])\n",
+    "    return words_list"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "#### Niedopuszczalne są takie nazwy zmiennych (z błędami!)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "dictinary_of_pairs_occurance = {}"
+   ]
   }
  ],
  "metadata": {
diff --git a/wyklad_debugowanie.ipynb b/wyklad_debugowanie.ipynb
new file mode 100644
index 0000000..35c89f6
--- /dev/null
+++ b/wyklad_debugowanie.ipynb
@@ -0,0 +1,112 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Debugowanie – Najważniejsze Informacje\n",
+    "Debugowanie to proces identyfikowania i usuwania błędów (bugów) w kodzie. Poniżej kluczowe pojęcia i techniki, które pomagają skutecznie debugować.\n",
+    "\n",
+    "#### Narzędzia do kontrolowania wykonywania kodu podczas debugowania:\n",
+    "\n",
+    "**Breakpoint** – punkt w kodzie, w którym debugger zatrzymuje wykonywanie programu.\n",
+    "\n",
+    "**Step Over** – wykonuje bieżącą linię i przechodzi do następnej.\n",
+    "\n",
+    "**Step Into** – wchodzi do wywoływanej funkcji, umożliwiając jej analizę.\n",
+    "\n",
+    "**Step Out** – kończy analizę funkcji i wraca do poziomu wywołującego.\n",
+    "\n",
+    "#### Wskazówki\n",
+    "\n",
+    "* Podczas debugowania warto skorzystać z **Debug Console**, pozwalającej na wywołanie kodu w Pythonie na podstawie obecnego stanu programu.\n",
+    "* Debugujmy zawsze na **przykładowych**, **prostych** danych! (zanim przejdziemy do docelowej, na ogół obszerniejszej wersji danych)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 26,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import random\n",
+    "\n",
+    "\n",
+    "def perform_random_operation(a, b):\n",
+    "    choice = random.choice([1, 2, 3])\n",
+    "\n",
+    "    if choice == 1:\n",
+    "        output = a + b\n",
+    "    elif choice == 2:\n",
+    "        output = a * b\n",
+    "    else:\n",
+    "        output = a / b\n",
+    "    \n",
+    "    return output"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 27,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def perform_random_operation_elementwise(list_a, list_b):\n",
+    "    res = []\n",
+    "\n",
+    "    for a, b in zip(list_a, list_b):\n",
+    "        value = perform_random_operation(a, b)\n",
+    "        res.append(value)\n",
+    "\n",
+    "    return res"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 29,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[1, 1.4, 7.5, 4.6, 45, 130, 500, 0, 400]"
+      ]
+     },
+     "execution_count": 29,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "first = [1, 5, 2, 5, 3, 10, 20, 0, 4]\n",
+    "second = [1, 7, 15, 23, 15, 13, 25, 24, 100]\n",
+    "\n",
+    "# first = [0, 0, 0]\n",
+    "# second = [0, 1, 2]\n",
+    "\n",
+    "perform_random_operation_elementwise(second, first)"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "base",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.11.5"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}