diff --git a/parser.py b/parser.py
index de4bc91..fee8b61 100755
--- a/parser.py
+++ b/parser.py
@@ -31,6 +31,7 @@ class GoogleSheetsCalParser(HTMLParser):
     """
     def __init__(self):
         self.inTable = False
+        self.inCell = False
         self.row = -1
         self.column = -1
         HTMLParser.__init__(self)
@@ -42,11 +43,16 @@ class GoogleSheetsCalParser(HTMLParser):
                 self.column = -1
             elif tag == 'td':
                 self.column += 1
+                if not (self.row < 3 or (self.row - 2) % 11 < 2):
+                    self.inCell = True
         elif tag == 'tbody':
             self.inTable = True
 
     def handle_endtag(self, tag):
-        ...
+        if tag == 'td':
+            self.inCell = False
+        elif tag == 'tbody':
+            self.inTable = False
 
     def handle_data(self, data):
         ...