diff --git a/exer_001.py b/exer_001.py
index 0a225af..f18c84d 100644
--- a/exer_001.py
+++ b/exer_001.py
@@ -12,8 +12,18 @@
 """
 
 # your name and email address here
-__author__ = 'xXLXx <leo@bywave.com.au>'
+__author__ = 'xXLXx <kevin@bywave.com.au>'
 
 
 if __name__ == '__main__':
-    # your code here
\ No newline at end of file
+	x = input()
+	if x < 60 or x > 100:
+		print "Invalid Value"
+	elif x in range(60, 75):
+		print "Derp!"
+	elif x in range(75, 85):
+		print "Good"
+	elif x in range(85, 95):
+		print "Very Good"
+	elif x in range(95, 101):
+		print "Level Asian!"
\ No newline at end of file
diff --git a/exer_002.py b/exer_002.py
index e3bd602..0d62cf4 100644
--- a/exer_002.py
+++ b/exer_002.py
@@ -8,8 +8,11 @@
 """
 
 # your name and email address here
-__author__ = 'xXLXx <leo@bywave.com.au>'
+__author__ = 'xXLXx <kevin@bywave.com.au>'
 
 
 if __name__ == '__main__':
-    # your code here
\ No newline at end of file
+	mods = [x for x in range(0,100) if x % 7 == 0]
+	print(mods)
+    # for x in range(0,100,7):
+    # 		print x
\ No newline at end of file
diff --git a/exer_003.py b/exer_003.py
index 3072053..4e17c3e 100644
--- a/exer_003.py
+++ b/exer_003.py
@@ -18,8 +18,9 @@
 
 
 # your name and email address here
-__author__ = 'xXLXx <leo@bywave.com.au>'
+__author__ = 'xXLXx <kevin@bywave.com.au>'
 
 
 if __name__ == '__main__':
-    # your code here
\ No newline at end of file
+    x = raw_input().replace(' ','').split(',')
+    print ','.join(sorted(x))
\ No newline at end of file
diff --git a/exer_004.py b/exer_004.py
new file mode 100644
index 0000000..2058ff3
--- /dev/null
+++ b/exer_004.py
@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+"""
+Exercise #4
+
+Write a program that prints out the square of the first 20 integers
+in a block such that the block has a dimension of 4x5.
+
+ 1   4   9   16
+ 25  36  49  64
+ 81 100 121 144
+169 196 225 256
+289 324 361 400
+"""
+
+
+# your name and email address here
+__author__ = 'xXLXx <leo@bywave.com.au>'
+
+
+if __name__ == '__main__':
+    # your code here
\ No newline at end of file
diff --git a/exer_005.py b/exer_005.py
new file mode 100644
index 0000000..2ceb2a0
--- /dev/null
+++ b/exer_005.py
@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*-
+"""
+Exercise #5:
+
+a program which determines whether the input string
+is a palindrome or not.
+(Disregard spaces)
+
+Example:
+
+Enter a string: This is a sample string.
+>> False
+
+Enter a string: Rats live on no evil star
+>> True
+"""
+
+
+# your name and email address here
+__author__ = 'xXLXx <leo@bywave.com.au>'
+
+
+if __name__ == '__main__':
+    # your code here
\ No newline at end of file