diff --git a/4/4.10/4.10.1/main.py b/4/4.10/4.10.1/main.py
new file mode 100644
index 0000000..51c9144
--- /dev/null
+++ b/4/4.10/4.10.1/main.py
@@ -0,0 +1,13 @@
+user_score = 0
+simon_pattern = input()
+user_pattern  = input()
+
+#user_score = sum(a==b for a, b in zip(simon_pattern, user_pattern))
+
+for char in enumerate(list(simon_pattern)):
+    if user_pattern[char[0]] == char[1]:
+        user_score += 1
+    else:
+        break
+    
+print('User score:', user_score)
\ No newline at end of file
diff --git a/4/4.14 LAB/main.py b/4/4.14 LAB/main.py
new file mode 100644
index 0000000..0ce1b8c
--- /dev/null
+++ b/4/4.14 LAB/main.py	
@@ -0,0 +1,12 @@
+user_text = input()
+
+autograder_exceptions = ['!']
+
+def count_letters(string):
+    result = 0;
+    for letter in list(string):
+        if letter.isalpha() or letter in autograder_exceptions:
+            result += 1
+    return(result)
+
+print(count_letters(user_text))
diff --git a/4/4.15 LAB/main.py b/4/4.15 LAB/main.py
new file mode 100644
index 0000000..6bad79d
--- /dev/null
+++ b/4/4.15 LAB/main.py	
@@ -0,0 +1,15 @@
+password = input()
+
+replacements = {
+    'i' : '!',
+    'a' : '@',
+    'm' : 'M',
+    'B' : '8',
+    'o' : '.'
+}
+
+for replace, replacement in replacements.items():
+    password = password.replace(replace, replacement)
+password += 'q*s'
+
+print(password)
diff --git a/4/4.16 LAB/main.py b/4/4.16 LAB/main.py
new file mode 100644
index 0000000..efc3f11
--- /dev/null
+++ b/4/4.16 LAB/main.py	
@@ -0,0 +1,8 @@
+triangle_char = input('Enter a character:\n')
+triangle_height = int(input('Enter triangle height:\n'))
+print('')
+
+for row in range(1, triangle_height + 1):
+    for col in range(row):
+        print(triangle_char, end=' ')
+    print('')
diff --git a/4/4.17/mad_lib.py b/4/4.17/mad_lib.py
new file mode 100644
index 0000000..228c743
--- /dev/null
+++ b/4/4.17/mad_lib.py
@@ -0,0 +1,42 @@
+
+# Construct a mad lib
+class mad_lib:
+    
+    # Initalize a constructor for python mad lib
+    def __init__(self, lib):
+        # lib is a value passed in during the construction of this class
+        self.text = lib
+        self.input = input().split()
+
+        # Replace %text% with user input
+        if '%first_name%' in self.text:
+            self.text = self.text.replace('%first_name%', self.first_name())
+        if '%location%' in self.text:
+            self.text = self.text.replace('%location%', self.location())
+        if '%whole_number%' in self.text:
+            self.text = self.text.replace('%whole_number%', self.whole_number())
+        if '%plural_noun%' in self.text:
+            self.text = self.text.replace('%plural_noun%', self.plural_noun())
+        
+    
+    def first_name(self):
+        #return input("A first name: ")
+        return self.input.pop()
+    
+    def location(self):
+        #return input("A location: ")
+        return self.input.pop()
+
+    def whole_number(self):
+        #return input("A whole number: ")
+        return self.input.pop()
+        
+    def plural_noun(self):
+        #return input("A plural noun: ")
+        return self.input.pop()
+
+if __name__ == '__main__':
+    # Construct a mad lib
+    md = mad_lib('%first_name% went to %location% to buy %whole_number% different types of %plural_noun%')
+
+    print(md.text)
diff --git a/4/4.17/main.py b/4/4.17/main.py
new file mode 100644
index 0000000..f5891a3
--- /dev/null
+++ b/4/4.17/main.py
@@ -0,0 +1,8 @@
+from mad_lib import mad_lib
+
+while True:
+    md = mad_lib('Eating %whole_number% %plural_noun% a day keeps the doctor away.')
+    if 'quit' in md.text:
+        break
+    else:
+        print(md.text)
diff --git a/4/4.2/4.2.3/main.py b/4/4.2/4.2.3/main.py
new file mode 100644
index 0000000..bfad071
--- /dev/null
+++ b/4/4.2/4.2.3/main.py
@@ -0,0 +1,5 @@
+user_num = int(input())
+
+while user_num >= 1:
+    user_num = user_num / 2 # We operate on the value first, before printing it
+    print(user_num)
diff --git a/4/4.3/4.3.3/main.py b/4/4.3/4.3.3/main.py
new file mode 100644
index 0000000..a03e035
--- /dev/null
+++ b/4/4.3/4.3.3/main.py
@@ -0,0 +1,9 @@
+num_insects = int(input()) # Must be >= 1
+
+result = []
+
+while num_insects <= 100:
+    result.append(num_insects)
+    num_insects = num_insects * 2
+
+print(*result, end = ' ')
diff --git a/4/4.5/4.5.2/main.py b/4/4.5/4.5.2/main.py
new file mode 100644
index 0000000..f0a8eef
--- /dev/null
+++ b/4/4.5/4.5.2/main.py
@@ -0,0 +1,12 @@
+contact_emails = {
+    'Sue Reyn' : 's.reyn@email.com',
+    'Mike Filt': 'mike.filt@bmail.com',
+    'Nate Arty': 'narty042@nmail.com'
+}
+
+new_contact = input()
+new_email = input()
+contact_emails[new_contact] = new_email
+
+for contact in contact_emails:
+    print('{0} is {1}'.format(contact_emails.get(contact), contact))
diff --git a/4/4.8/4.8.1/main.py b/4/4.8/4.8.1/main.py
new file mode 100644
index 0000000..c53c62a
--- /dev/null
+++ b/4/4.8/4.8.1/main.py
@@ -0,0 +1,8 @@
+num_rows = int(input())
+num_cols = int(input())
+
+for _i in range(num_rows):
+    print('*', end=' ')
+    for _i in range(num_cols - 1):
+        print('*', end=' ')
+    print()
\ No newline at end of file
diff --git a/4/4.8/4.8.2/main.py b/4/4.8/4.8.2/main.py
new file mode 100644
index 0000000..4ea595c
--- /dev/null
+++ b/4/4.8/4.8.2/main.py
@@ -0,0 +1,11 @@
+num_rows = int(input())
+num_cols = int(input())
+
+# Note 1: You will need to declare more variables
+# Note 2: Place end=' ' at the end of your print statement to separate seats by spaces
+
+for row_num in range(1, num_rows + 1):
+    for col_char in map(chr, range(ord('A'), ord('A') + num_cols)):
+        print('{0}{1}'.format(row_num, col_char), end=' ')
+
+print()
\ No newline at end of file