diff --git a/Week03/sequences_aygul_ozkeklik.py b/Week03/sequences_aygul_ozkeklik.py
new file mode 100644
index 00000000..a6633fcc
--- /dev/null
+++ b/Week03/sequences_aygul_ozkeklik.py
@@ -0,0 +1,20 @@
+def remove_duplicates(my_list):
+    result = []
+    for item in my_list:
+        if item not in result:
+            result.append(item)
+    return result
+
+
+def list_counts(my_list):
+    counts = {}
+    for item in my_list:
+        counts[item] = counts.get(item, 0) + 1
+    return counts
+
+
+def reverse_dict(d):
+    reversed_d = {}
+    for k, v in d.items():
+        reversed_d[v] = k
+    return reversed_d