diff --git a/challenge_02/challenge_02.ipynb b/challenge_02/challenge_02.ipynb
index 39cada4..3313780 100644
--- a/challenge_02/challenge_02.ipynb
+++ b/challenge_02/challenge_02.ipynb
@@ -178,41 +178,83 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "def find_cycle_length():\n",
+    "def find_cycle_length(s):\n",
     "    '''\n",
     "    Function which runs Commander Bunny's randomization algorithm until\n",
     "    a cycle is detected. The returned value will represent the number of \n",
     "    minions which are caught inside the reassignment cycle. \n",
     "    '''\n",
-    "    pass"
+    "    i = (s+s).find(s, 1, -1)\n",
+    "    print(i)\n",
+    "    return None if i == -1 else s[:i]"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": 19,
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "z = 02222 ... in base 3 ... with padding ... \n",
-      "z = 12221 ... in base 3 ... with padding ... \n",
-      "z = 10212 ... in base 3 ... with padding ... \n",
-      "z = 20211 ... in base 3 ... with padding ... \n",
-      "z = 20211 ... in base 3 ... with padding ... \n",
-      "z = 20211 ... in base 3 ... with padding ... \n",
-      "z = 20211 ... in base 3 ... with padding ... \n",
-      "z = 20211 ... in base 3 ... with padding ... \n",
-      "z = 20211 ... in base 3 ... with padding ... \n",
-      "z = 20211 ... in base 3 ... with padding ... \n"
+      "z = 220101 ... in base 3 ... with padding ... \n",
+      "z = 212201 ... in base 3 ... with padding ... \n",
+      "z = 210111 ... in base 3 ... with padding ... \n",
+      "z = 122221 ... in base 3 ... with padding ... \n",
+      "z = 102212 ... in base 3 ... with padding ... \n",
+      "z = 210111 ... in base 3 ... with padding ... \n",
+      "['220101', '212201', '210111', '122221', '102212']\n",
+      "5\n",
+      "2\n",
+      "102212\n"
      ]
     }
    ],
    "source": [
+    "not_match = True\n",
+    "sequence_list = []\n",
+    "x = 210022\n",
+    "i = 0\n",
+    "while i<10 and not_match:\n",
+    "    x = new_minion_assignment(x, 3)\n",
+    "    if x in sequence_list:\n",
+    "        pass\n",
+    "        not_match = False\n",
+    "    else:\n",
+    "        sequence_list.append(x)\n",
+    "    i += 1\n",
+    "print(sequence_list)\n",
+    "print(i-1)\n",
+    "print(sequence_list.index(x))\n",
+    "print(sequence_list[i-2])"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "sequence = \"\"\n",
+    "sequence_list = []\n",
     "x = 32333\n",
     "for i in range(10):\n",
-    "    x = new_minion_assignment(x, 3)"
+    "    x = new_minion_assignment(x, 3)\n",
+    "    sequence += x\n",
+    "    sequence_list.append(x)\n",
+    "    print(sequence)\n",
+    "    print(sequence_list)\n",
+    "    "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "find_cycle_length('12341234')"
    ]
   },
   {