diff --git a/Week03/sequences_kerem_kurtuldu.py b/Week03/sequences_kerem_kurtuldu.py
new file mode 100644
index 00000000..d06104c6
--- /dev/null
+++ b/Week03/sequences_kerem_kurtuldu.py
@@ -0,0 +1,24 @@
+def remove_duplicates(seq: list) -> list:
+    # Remove duplicates by iterating and adding unique items to a new list
+    unique_items = []
+    for item in seq:
+        if item not in unique_items:
+            unique_items.append(item)
+    return unique_items
+
+def list_counts(seq: list) -> dict:
+    # Count occurrences using a dictionary and a loop
+    counts = {}
+    for item in seq:
+        if item in counts:
+            counts[item] += 1
+        else:
+            counts[item] = 1
+    return counts
+
+def reverse_dict(d: dict) -> dict:
+    # Reverse dictionary using a loop
+    reversed_dict = {}
+    for key, value in d.items():
+        reversed_dict[value] = key
+    return reversed_dict