diff --git a/langhuan/progress.py b/langhuan/progress.py
index 2936d10..b978366 100644
--- a/langhuan/progress.py
+++ b/langhuan/progress.py
@@ -30,10 +30,11 @@ def __getitem__(self, user_id):
         """
         if user_id in self.busy_by_user:
             # read cache
+            print(f"caching user {user_id}: idx{self.busy_by_user[user_id]}")
             return self.busy_by_user[user_id]
 
-        user = self.user_progress(user_id)
         self.user_clear_progress(user_id)
+        user = self.user_progress(user_id)
         try:
             index = user[0]
             self.after_get_update(user_id, index)
@@ -74,11 +75,18 @@ def finish_update(
 
     def user_clear_progress(self, user_id):
         user_progress = self.user_progress(user_id)
+
+        # new_progress = []
+        # for i in user_progress:
+        #     if i > self.sent:
+        #         new_progress.append(i)
+        # self.by_user[user_id] = new_progress
+        # print(f"user_progress:{self.by_user[user_id]}")
         for i in user_progress:
             if i <= self.sent:
                 user_progress.remove(i)
-            else:
-                break
+        print(f"user_progress:{self.by_user[user_id]}")
+        print(f"user_progress:{user_progress}")
 
     def tick_sent(self, index):
         self.sent = index
@@ -91,14 +99,20 @@ class Progress:
         allowing multiple but limited number of users
         working a the same progress, with limited tags
         per entry of raw data
+    index is a generated incremental integer series
+    idx is the pandas index
     """
 
     def __init__(
         self,
-        progress_list: List[int],
+        progress_list: List[Union[int, str]],
         cross_verify_num: int = 1,
         history_length: int = 20,
     ):
+        """
+        progress_list: List[int], a list of pandas index (idx)
+            reordered by order strategy
+        """
         self.progress_list = progress_list
         self.history_length = history_length
         self.v_num = cross_verify_num
@@ -140,6 +154,8 @@ def tagging(self, data):
     def update_personal(self, data):
         """
         update data to personal history
+        This history is for showing history lines on
+            the left side of web browswer
         """
         user_id = data["user_id"]
         personal_history = self.personal_history.get(user_id)
@@ -153,4 +169,4 @@ def update_personal(self, data):
                     len(personal_history) - self.history_length:]
         else:
             self.personal_history[user_id] = []
-            self.update_personal(data)
\ No newline at end of file
+            self.update_personal(data)
diff --git a/ner_test.ipynb b/ner_test.ipynb
index 543cbd9..7b3f938 100644
--- a/ner_test.ipynb
+++ b/ner_test.ipynb
@@ -130,6 +130,95 @@
     "app.run(\"0.0.0.0\", port=5000)"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": 12,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "'Corporation\\njgreen@csd.harris.com\\t\\t\\tComputer Systems Division\\n\"The only thing that really scares me is a person with no sense of humor.\"\\n\\t\\t\\t\\t\\t\\t-- Jonathan Winters\\n'"
+      ]
+     },
+     "execution_count": 12,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "df.loc[3][\"text\"][652:]"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 13,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from langhuan.utility import cleanup_tags"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 18,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "3"
+      ]
+     },
+     "execution_count": 18,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "len(\"˃˃˃\")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 20,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "3"
+      ]
+     },
+     "execution_count": 20,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "len(\"˂˂˂\")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 14,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "'Harris Corporation\\njgreen@csd.harris.com\\t\\t\\tComputer Systems Division\\n\"The only thing that really scares me is a person with no sense of humor.\"\\n\\t\\t\\t\\t\\t\\t-- Jonathan Winters\\n'"
+      ]
+     },
+     "execution_count": 14,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "cleanup_tags(df.loc[3][\"text\"])[652:]"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/tests/dispatcher_test.ipynb b/tests/dispatcher_test.ipynb
index 63887d4..f8e4f7f 100644
--- a/tests/dispatcher_test.ipynb
+++ b/tests/dispatcher_test.ipynb
@@ -2,18 +2,17 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 1,
    "metadata": {},
    "outputs": [],
    "source": [
     "import unittest\n",
-    "\n",
     "from langhuan.progress import Dispatcher"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": 2,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -46,6 +45,7 @@
     "            result.update({f\"step_{i}\": [i1, i2, i3]})\n",
     "            dispatcher.finish_update(1, index=i1)\n",
     "            dispatcher.finish_update(3, index=i3)\n",
+    "        \n",
     "        expected = {'step_0': [0, 0, 0],\n",
     "                    'step_1': [1, 0, 1],\n",
     "                    'step_2': [2, 0, 2],\n",
@@ -67,6 +67,7 @@
     "                dispatcher.finish_update(2, index=i2)\n",
     "            if i % 3 != 2:\n",
     "                dispatcher.finish_update(3, index=i3)\n",
+    "        print(result)\n",
     "        expected = {'step_0': [0, 0, 1],\n",
     "                    'step_1': [0, 1, 2],\n",
     "                    'step_2': [2, 1, 3],\n",
@@ -84,18 +85,109 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": 3,
    "metadata": {},
    "outputs": [
     {
      "name": "stderr",
      "output_type": "stream",
      "text": [
-      "...\n",
+      ".F."
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "user_progress:[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+      "caching user 2: idx0\n",
+      "user_progress:[1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[2, 3, 4, 5, 6, 7, 8, 9]\n",
+      "caching user 2: idx0\n",
+      "user_progress:[2, 3, 4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[3, 4, 5, 6, 7, 8, 9]\n",
+      "caching user 2: idx0\n",
+      "user_progress:[3, 4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[4, 5, 6, 7, 8, 9]\n",
+      "caching user 2: idx0\n",
+      "user_progress:[4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[5, 6, 7, 8, 9]\n",
+      "caching user 2: idx0\n",
+      "user_progress:[5, 6, 7, 8, 9]\n",
+      "user_progress:[6, 7, 8, 9]\n",
+      "caching user 2: idx0\n",
+      "user_progress:[6, 7, 8, 9]\n",
+      "user_progress:[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+      "caching user 1: idx0\n",
+      "user_progress:[1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[2, 3, 4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[2, 3, 4, 5, 6, 7, 8, 9]\n",
+      "caching user 2: idx1\n",
+      "user_progress:[3, 4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[3, 4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[4, 5, 6, 7, 8, 9]\n",
+      "caching user 3: idx3\n",
+      "caching user 1: idx3\n",
+      "user_progress:[5, 6, 7, 8, 9]\n",
+      "user_progress:[4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[5, 6, 7, 8, 9]\n",
+      "caching user 2: idx5\n",
+      "user_progress:[6, 7, 8, 9]\n",
+      "user_progress:[6, 7, 8, 9]\n",
+      "user_progress:[7, 8, 9]\n",
+      "caching user 3: idx6\n",
+      "caching user 1: idx6\n",
+      "user_progress:[8, 9]\n",
+      "user_progress:[7, 8, 9]\n",
+      "user_progress:[8, 9]\n",
+      "caching user 2: idx8\n",
+      "user_progress:[9]\n",
+      "user_progress:[9]\n",
+      "user_progress:[]\n",
+      "caching user 3: idx9\n",
+      "caching user 1: idx9\n",
+      "user_progress:[]\n",
+      "user_progress:[]\n",
+      "user_progress:[]\n",
+      "user_progress:[]\n",
+      "user_progress:[]\n",
+      "{'step_0': [0, 0, 1], 'step_1': [0, 1, 2], 'step_2': [2, 1, 3], 'step_3': [3, 4, 3], 'step_4': [3, 5, 4], 'step_5': [5, 5, 6], 'step_6': [6, 7, 6], 'step_7': [6, 8, 7], 'step_8': [8, 8, 9], 'step_9': [9, -1, 9], 'step_10': [9, -1, -1], 'step_11': [-1, -1, -1]}\n",
+      "user_progress:[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[2, 3, 4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[3, 4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[4, 5, 6, 7, 8, 9]\n",
+      "user_progress:[5, 6, 7, 8, 9]\n",
+      "user_progress:[6, 7, 8, 9]\n",
+      "user_progress:[7, 8, 9]\n",
+      "user_progress:[8, 9]\n",
+      "user_progress:[9]\n",
+      "user_progress:[]\n"
+     ]
+    },
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "\n",
+      "======================================================================\n",
+      "FAIL: test_nb_user_lg_than_v (__main__.DispatcherTest)\n",
       "----------------------------------------------------------------------\n",
-      "Ran 3 tests in 0.003s\n",
+      "Traceback (most recent call last):\n",
+      "  File \"<ipython-input-2-4ee9ee4ab55a>\", line 65, in test_nb_user_lg_than_v\n",
+      "    self.assertEqual(result, expected)\n",
+      "AssertionError: {'ste[68 chars] [3, 4, 3], 'step_4': [3, 5, 4], 'step_5': [5,[136 chars] -1]} != {'ste[68 chars] [3, 3, 3], 'step_4': [3, 4, 4], 'step_5': [5,[135 chars] -1]}\n",
+      "Diff is 767 characters long. Set self.maxDiff to None to see it.\n",
       "\n",
-      "OK\n"
+      "----------------------------------------------------------------------\n",
+      "Ran 3 tests in 0.010s\n",
+      "\n",
+      "FAILED (failures=1)\n"
      ]
     }
    ],
@@ -103,6 +195,84 @@
     "ran = unittest.main(argv=['first-arg-is-ignored'], exit=False)"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "```\n",
+    "user_progress:[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+    "caching user 2: idx0\n",
+    "user_progress:[1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[2, 3, 4, 5, 6, 7, 8, 9]\n",
+    "caching user 2: idx0\n",
+    "user_progress:[2, 3, 4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[3, 4, 5, 6, 7, 8, 9]\n",
+    "caching user 2: idx0\n",
+    "user_progress:[3, 4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[4, 5, 6, 7, 8, 9]\n",
+    "caching user 2: idx0\n",
+    "user_progress:[4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[5, 6, 7, 8, 9]\n",
+    "caching user 2: idx0\n",
+    "user_progress:[5, 6, 7, 8, 9]\n",
+    "user_progress:[6, 7, 8, 9]\n",
+    "caching user 2: idx0\n",
+    "user_progress:[6, 7, 8, 9]\n",
+    "user_progress:[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+    "caching user 1: idx0\n",
+    "user_progress:[1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[2, 3, 4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[2, 3, 4, 5, 6, 7, 8, 9]\n",
+    "caching user 2: idx1\n",
+    "user_progress:[3, 4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[3, 4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[4, 5, 6, 7, 8, 9]\n",
+    "caching user 3: idx3\n",
+    "caching user 1: idx3\n",
+    "user_progress:[5, 6, 7, 8, 9]\n",
+    "user_progress:[4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[5, 6, 7, 8, 9]\n",
+    "caching user 2: idx5\n",
+    "user_progress:[6, 7, 8, 9]\n",
+    "user_progress:[6, 7, 8, 9]\n",
+    "user_progress:[7, 8, 9]\n",
+    "caching user 3: idx6\n",
+    "caching user 1: idx6\n",
+    "user_progress:[8, 9]\n",
+    "user_progress:[7, 8, 9]\n",
+    "user_progress:[8, 9]\n",
+    "caching user 2: idx8\n",
+    "user_progress:[9]\n",
+    "user_progress:[9]\n",
+    "user_progress:[]\n",
+    "caching user 3: idx9\n",
+    "caching user 1: idx9\n",
+    "user_progress:[]\n",
+    "user_progress:[]\n",
+    "user_progress:[]\n",
+    "user_progress:[]\n",
+    "user_progress:[]\n",
+    "{'step_0': [0, 0, 1], 'step_1': [0, 1, 2], 'step_2': [2, 1, 3], 'step_3': [3, 4, 3], 'step_4': [3, 5, 4], 'step_5': [5, 5, 6], 'step_6': [6, 7, 6], 'step_7': [6, 8, 7], 'step_8': [8, 8, 9], 'step_9': [9, -1, 9], 'step_10': [9, -1, -1], 'step_11': [-1, -1, -1]}\n",
+    "user_progress:[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[2, 3, 4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[3, 4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[4, 5, 6, 7, 8, 9]\n",
+    "user_progress:[5, 6, 7, 8, 9]\n",
+    "user_progress:[6, 7, 8, 9]\n",
+    "user_progress:[7, 8, 9]\n",
+    "user_progress:[8, 9]\n",
+    "user_progress:[9]\n",
+    "user_progress:[]\n",
+    "\n",
+    "```"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,