diff --git a/2nd/13_Programmation/4E_boucle_for.ipynb b/2nd/13_Programmation/4E_boucle_for.ipynb
index 61008de..84be269 100644
--- a/2nd/13_Programmation/4E_boucle_for.ipynb
+++ b/2nd/13_Programmation/4E_boucle_for.ipynb
@@ -116,6 +116,165 @@
    "outputs": [],
    "source": []
   },
+  {
+   "cell_type": "markdown",
+   "id": "331a2cbc",
+   "metadata": {},
+   "source": [
+    "## 2- Dessins ASCII\n",
+    "\n",
+    "Le but de cette partie est de réaliser des dessins avec des chaines de caractères.\n",
+    "\n",
+    "Quand on multiplie une chaine de caractères (par exemple \"#\") par un entier (par exemple 4), python va répéter la chaine de caractères.\n",
+    "\n",
+    "Quelques exemples:"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "f853763e",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "print(\"#\"*4)\n",
+    "print(\"-\"*10)\n",
+    "print(\"_\"*3, \" \"*2, \"-\"*5)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "39c31073",
+   "metadata": {},
+   "source": [
+    "On peut utiliser des boucles pour faire ensuite des motifs"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "f27d70f7",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "for i in range(5):\n",
+    "    print(\"-\", \"#\"*i)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "1cb955ec",
+   "metadata": {},
+   "source": [
+    "1. Réaliser le motif suivant:\n",
+    "\n",
+    "\n",
+    "        -\n",
+    "        --\n",
+    "        ---\n",
+    "        ----\n",
+    "        -----\n",
+    "        ------\n",
+    "        -------\n",
+    "        --------\n",
+    "        ---------  "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "9722d016",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "markdown",
+   "id": "f5b643e3",
+   "metadata": {},
+   "source": [
+    "2. Réaliser le motif suivant\n",
+    "\n",
+    "        \n",
+    "        ##\n",
+    "        ####\n",
+    "        ######\n",
+    "        ########"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "500f4704",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "markdown",
+   "id": "e3effd90",
+   "metadata": {},
+   "source": [
+    "3. Réaliser le motif suivant\n",
+    "\n",
+    "        ######\n",
+    "        #####\n",
+    "        ####\n",
+    "        ###\n",
+    "        ##\n",
+    "        #"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "95855d5a",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "markdown",
+   "id": "7a8f1d02",
+   "metadata": {},
+   "source": [
+    "4. Réaliser le motif suivant\n",
+    "\n",
+    "\n",
+    "        #\n",
+    "        ##\n",
+    "        ###\n",
+    "        ####\n",
+    "        #####\n",
+    "        ######\n",
+    "        #####\n",
+    "        ####\n",
+    "        ###\n",
+    "        ##\n",
+    "        #"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "2593c488",
+   "metadata": {},
+   "source": [
+    "5. Réaliser le motif suivant\n",
+    "\n",
+    "            #    \n",
+    "           ###   \n",
+    "          #####  \n",
+    "         ####### "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "dee48acd",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
   {
    "cell_type": "markdown",
    "id": "9880d494",