diff --git a/Week03/sequences_afra_inanc.py b/Week03/sequences_afra_inanc.py
new file mode 100644
index 00000000..bbd210e9
--- /dev/null
+++ b/Week03/sequences_afra_inanc.py
@@ -0,0 +1,22 @@
+def remove_duplicates(seq: list) -> list:
+    result = []
+    for element in seq:
+        if element not in result:
+            result += [element]
+    return result
+
+
+def list_counts(seq: list) -> dict:
+    counts = {}
+    for element in seq:
+        if element not in counts:
+            counts[element] = 0
+        counts[element] += 1
+    return counts
+
+
+def reverse_dict(d: dict) -> dict:
+    new_dict = {}
+    for key in d:
+        new_dict[d[key]] = key
+    return new_dict