      "            order_list.append(item)\n",
      "    return order_list\n",
      "\n",
      "def group_ordered(list_in):\n",
      "    if list_in is None:\n",
      "        return None\n",
      "    order_list = make_order_list(list_in)\n",
      "    current = 0\n",
      "    for item in order_list:\n",
      "        search = current + 1\n",
      "        while True:\n",
      "            try:\n",
      "                if list_in[search] != item:\n",
      "                    search += 1\n",
      "                else:\n",
      "                    current += 1\n",
      "                    list_in[current], list_in[search] = list_in[search], list_in[current]\n",
      "                    search += 1\n",
      "            except IndexError:\n",
      "                break\n",
      "    return list_in"
     ]
    },
    {
     "cell_type": "markdown",
     "metadata": {},
 
</s> remove    "execution_count": 5,
 </s> add    "execution_count": 1, </s> remove     "def make_order_list(list_in):\n",
    "    order_list = []\n",
    "    for item in list_in:\n",
    "        if item not in order_list:\n",
    "            order_list.append(item)\n",
    "    return order_list\n",
    "\n",
 </s> add 
    "    # TODO: Implement me\n",
    "    pass"
      "            order_list.append(item)\n",
      "    return order_list\n",
      "\n",
      "def group_ordered(list_in):\n",
    "    # TODO: Implement me\n",
    "    pass"
    "    # TODO: Implement me\n",
    "    pass"
    "    # TODO: Implement me\n",
    "    pass"
    "    # TODO: Implement me\n",
    "    pass"
    "    # TODO: Implement me\n",
    "    pass"
    "    # TODO: Implement me\n",
    "    pass"
    "    # TODO: Implement me\n",
    "    pass"
    "    # TODO: Implement me\n",
    "    pass"
    "    # TODO: Implement me\n",
    "    pass"
    "    # TODO: Implement me\n",
    "    pass"
    "    # TODO: Implement me\n",
    "    pass"
    "    # TODO: Implement me\n",
    "    pass"
    "    # TODO: Implement me\n",
    "    pass"
    "    # TODO: Implement me\n",
    "    pass"
    "    # TODO: Implement me\n",
    "    pass"
    "    # TODO: Implement me\n",
    "    pass"
    "    # TODO: Implement me\n",
    "    pass"
     ]
    },
    {
     "cell_type": "markdown",
     "metadata": {},
keep keep keep keep replace replace replace replace replace replace replace replace replace replace replace replace replace replace replace replace replace keep keep keep keep keep
 removed my code from challenge 
arrays_strings/group_items/group_ordered_challenge.ipynb