diff --git a/s1.py b/s1.py
index d42e03b..9ca79ff 100755
--- a/s1.py
+++ b/s1.py
@@ -1,5 +1,8 @@
-# -*- coding:utf-8 -*-
 #!/usr/bin/env python
+# -*- coding:utf-8 -*-
+'''
+Step 1
+'''
 from __future__ import print_function
 from base import Lo, RAW_DIR, TARGET_DIR
 import os
diff --git a/s2.py b/s2.py
index a7c56b8..9a378f8 100755
--- a/s2.py
+++ b/s2.py
@@ -1,5 +1,8 @@
-# -*- coding:utf-8 -*-
 #!/usr/bin/env python
+# -*- coding:utf-8 -*-
+'''
+Step 2
+'''
 from __future__ import print_function
 from base import Lo, create_csv, TARGET_DIR
 import os
diff --git a/s3.py b/s3.py
index 06da602..91e62b0 100755
--- a/s3.py
+++ b/s3.py
@@ -1,8 +1,8 @@
+#!/usr/bin/env python
+# -*- coding:utf-8 -*-
 '''
-WTH
+Step 3
 '''
-# -*- coding:utf-8 -*-
-#!/usr/bin/env python
 from __future__ import print_function
 from base import Lo, create_csv, TARGET_DIR
 import os
diff --git a/s4.py b/s4.py
index 06f69ed..0224e4d 100755
--- a/s4.py
+++ b/s4.py
@@ -1,8 +1,8 @@
+#!/usr/bin/env python
+# -*- coding:utf-8 -*-
 '''
 Step 4
 '''
-# -*- coding:utf-8 -*-
-#!/usr/bin/env python
 from __future__ import print_function
 from base import Lo, create_csv, TARGET_DIR
 import os
diff --git a/s5.py b/s5.py
index cc42052..0e61ef5 100644
--- a/s5.py
+++ b/s5.py
@@ -1,8 +1,8 @@
+#!/usr/bin/env python
+# -*- coding:utf-8 -*-
 '''
 Step 5
 '''
-# -*- coding:utf-8 -*-
-#!/usr/bin/env python
 from __future__ import print_function
 from base import create_csv, TARGET_DIR, MODEL_LIST
 import os
diff --git a/s6.py b/s6.py
index fdf93d0..31ce8ae 100644
--- a/s6.py
+++ b/s6.py
@@ -1,8 +1,8 @@
+#!/usr/bin/env python
+# -*- coding:utf-8 -*-
 '''
 Step 6
 '''
-# -*- coding:utf-8 -*-
-#!/usr/bin/env python
 from __future__ import print_function
 from base import create_csv, TARGET_DIR, MODEL_LIST
 import os
diff --git a/s7.py b/s7.py
index 8914a22..50343b0 100644
--- a/s7.py
+++ b/s7.py
@@ -1,8 +1,8 @@
+#!/usr/bin/env python
 # -*- coding:utf-8 -*-
 '''
 Step 7
 '''
-#!/usr/bin/env python
 from __future__ import print_function
 from base import create_csv, TARGET_DIR, MODEL_LIST
 import os
@@ -17,12 +17,21 @@ No of R ของคุณ ======= TOTAL -- ถ้าต้องการทั
 แต่ว่า ผมไม่รับรองว่าจะใช้ได้ทั้งหมดเพราะว่า มันก็ขึ้นกับหลายอย่าง
 เช่น 1Ts มีไม่กี่อันอาจจะ error มั้ง? โดยเฉพาะเวลา random
 '''
-NOT_ARG = '2Ts'
+NOT_ARG = '3Ts'
 TOTAL = 20
 
 SRC_PATH = os.path.join(TARGET_DIR, 'part6')
 
 
+def get_yynn_count(cols):
+    n = 0
+    for c in cols:
+        if c in ('Y', 'Y*', 'N', 'N*'):
+            n += 1
+        elif c in ('Y/N', 'Y/N*'):
+            n += 2
+    return n
+
 def get_by_order():
     for m in MODEL_LIST:
         result = []
@@ -38,6 +47,7 @@ def get_by_order():
                     r[2],  # No of Tree
                     m,  # model
                 ] + r[7:]
+                row.append(get_yynn_count(r[7:]))  # ??????????
                 result.append(row)
                 count += 1
                 if count >= TOTAL and TOTAL > 0:
@@ -60,6 +70,7 @@ def get_by_random():
                     r[2],  # No of Tree
                     m,  # model
                 ] + r[7:]
+                l.append(get_yynn_count(r[7:]))  # ??????????
                 lo_list.append(l)
 
         picked = []
@@ -111,6 +122,7 @@ def get_by_group(model_name, step, **kwargs):
                     _r[i] = '%s*' % calibrator[i]
                 else:  # one Y one N
                     _r[i] = 'Y/N*'
+            _r.append(get_yynn_count(r[7:]))  # ??????????
             result.append(_r)
             calibrator = _r[:]
 
diff --git a/s8.py b/s8.py
old mode 100644
new mode 100755
index 933111a..c5ff574
--- a/s8.py
+++ b/s8.py
@@ -1,8 +1,8 @@
+#!/usr/bin/env python
 # -*- coding:utf-8 -*-
 '''
-Step 7
+Step 8
 '''
-#!/usr/bin/env python
 from __future__ import print_function
 from base import create_csv, TARGET_DIR, MODEL_LIST, RAW_DIR
 import os