diff --git a/scripts/pyaccuwage-checkseq.py b/scripts/pyaccuwage-checkseq.py
index fcf3ab0..194a014 100755
--- a/scripts/pyaccuwage-checkseq.py
+++ b/scripts/pyaccuwage-checkseq.py
@@ -18,19 +18,27 @@ args = parser.parse_args()
 class ClassEntry(object):
     re_rangecomment = re.compile('#\s+(\d+)\-?(\d*)$')
 
-    def __init__(self, classname, subclassof):
-        self.classname = classname
-        self.subclassof = subclassof
+    def __init__(self, classname, line):
+        self.classname = classname,
+        self.line = line
         self.lines = []
 
     def add_line(self, line):
         self.lines.append(line)
 
     def validate(self):
-        for line in self.lines:
+        i = 0
+        for (line_no, line) in enumerate(self.lines):
             match = self.re_rangecomment.search(line)
             if match:
-                print match.groups()
+                (a, b) = match.groups()
+                a = int(a)
+
+                if (i + 1) != a:
+                    line_number = self.line + line_no
+                    print("ERROR\tline:%d\tnear:%s\texpected:%d\tsaw:%d" % (line_number, line.split(' ')[0].strip(), i+1, a))
+
+                i = int(b) if b else a
 
 class ModelDefParser(object):
     re_triplequote = re.compile('"""')
@@ -39,14 +47,15 @@ class ModelDefParser(object):
 
     def __init__(self, infile):
         self.infile = infile
+        self.line = 0
 
     def endclass(self):
         if self.current_class:
             self.current_class.validate()
             self.current_class = None
 
-    def beginclass(self, classname, subclass_of):
-        self.current_class = ClassEntry(classname, subclass_of)
+    def beginclass(self, classname, line):
+        self.current_class = ClassEntry(classname, line)
 
     def parse(self):
         infile = self.infile
@@ -55,6 +64,8 @@ class ModelDefParser(object):
         self.current_class = None
 
         for line in infile:
+            self.line += 1
+
             if line.startswith('#'):
                 continue
 
@@ -73,10 +84,9 @@ class ModelDefParser(object):
             classmatch = self.re_classdef.match(line)
             if classmatch:
                 classname, subclass = classmatch.groups()
-                self.beginclass(classname, subclass)
+                self.beginclass(classname, self.line)
                 continue
 
-            print match_whitespace
             if match_whitespace < whitespace:
                 whitespace = match_whitespace
                 self.endclass()