diff --git a/parser/Lexer.py b/parser/Lexer.py
index 3ee67e9..7f980c0 100644
--- a/parser/Lexer.py
+++ b/parser/Lexer.py
@@ -5,11 +5,28 @@ class Lexer(object):
     def __init__(self):
         self.reserved = {
                 'C': 'C',
+
+                # types
+                'char': 'CHAR',
+                'short': 'SHORT',
+                'int': 'INT',
+                'long': 'LONG',
+
+                # control
+                'if': 'IF',
+                'else': 'ELSE',
+                'while': 'WHILE',
+                'for': 'FOR',
+                'return': 'RETURN',
                 }
 
         self.tokens = [
                 'LPAREN',
                 'RPAREN',
+                'LBRACKET',
+                'RBRACKET',
+                'LCURLY',
+                'RCURLY',
                 'SEMICOLON',
                 'STRING',
                 'ID',
@@ -21,6 +38,10 @@ class Lexer(object):
 
         self.t_LPAREN = r'\('
         self.t_RPAREN = r'\)'
+        self.t_LBRACKET = r'\['
+        self.t_RBRACKET = r'\]'
+        self.t_LCURLY = r'\{'
+        self.t_RCURLY = r'\}'
         self.t_SEMICOLON = r';'
 
         self.t_ignore = ' \t\r'