diff --git a/proposal.py b/proposal.py
new file mode 100644
index 0000000..3e237d8
--- /dev/null
+++ b/proposal.py
@@ -0,0 +1,63 @@
+def levenshtein(a, b):
+    i, j = len(a), len(b)
+
+    if not min(i, j):
+        return max(i, j)
+
+    return min(
+        levenshtein(a[:i - 1], b) + 1,
+        levenshtein(a, b[:j - 1]) + 1,
+        levenshtein(a[:i - 1], b[:j - 1]) + (1 if a[-1] != b[-1] else 0),
+    )
+
+
+def levenshtein_(a, b):  # according to insertion, retrieve and replacement rules (2, 2, 3)
+    i, j = len(a), len(b)
+
+    if not min(i, j):
+        return max(i, j)
+
+    return min(
+        levenshtein(a[:i - 1], b) + 2,
+        levenshtein(a, b[:j - 1]) + 2,
+        levenshtein(a[:i - 1], b[:j - 1]) + (3 if a[-1] != b[-1] else 0),
+    )
+
+
+def autocompletion(word, dictionary):
+    levenshtein_values = [(w, levenshtein(word, w)) for w in dictionary]
+
+    return min(levenshtein_values, key=lambda value: value[1])
+
+
+DICTIONARY = [
+    "algorithme",
+    "ahgorithme",
+    "arbre",
+    "barbe",
+    "globe",
+    "orbe",
+    "tac",
+    "bulbizarre",
+    "herbizarre",
+    "carapuce",
+    "salameche"
+]
+WORDS = [
+    "rythme",
+    "arbore",
+    # "logarithme",
+    "lobe",
+    "robe",
+    "talc",
+    # "carteapuce",
+    # "salamuce",
+    # "saramuce",
+    # "blubizarre",
+    # "herbebizarre",
+    # "xxxbizarre"
+]
+
+if __name__ == '__main__':
+    for item in WORDS:
+        print(item, autocompletion(item, DICTIONARY))