diff --git a/Week03/sequence_ahmet_alp_ozdemir.py b/Week03/sequence_ahmet_alp_ozdemir.py
new file mode 100644
index 00000000..51a2abc2
--- /dev/null
+++ b/Week03/sequence_ahmet_alp_ozdemir.py
@@ -0,0 +1,20 @@
+def remove_duplicates(seq):
+    result = []
+    for word in seq:
+        if word not in result:
+            result.append(word)
+    return result
+
+
+def list_counts(seq):
+    counts = {}
+    for word in seq:
+        counts[word] = counts.get(word, 0) + 1
+    return counts
+
+
+def reverse_dict(d):
+    reversed_str = {}
+    for key, value in d.items():
+        reversed_str[value] = key
+    return reversed_str