diff --git a/data.csv b/data.csv
index 1c910ec..d5e8998 100644
--- a/data.csv
+++ b/data.csv
@@ -1,3 +1,3 @@
-1;5;good job
-2;5;nice price
-3;5;super work
\ No newline at end of file
+1;5;gOOd Job
+2;5;niCe pRIcE
+3;5;sUPer worKk
\ No newline at end of file
diff --git a/main.py b/main.py
index d217806..3c9b84c 100644
--- a/main.py
+++ b/main.py
@@ -1,8 +1,19 @@
 # Система анализа и модерации отзывов на товары (E-Commerce Review Engine)
 
 def clean_text(text: str):
-
-    return str
+    text = "1;5;?П:::р?И,,вЕт!     ДуРг."
+    black_list = ",?:"
+    if text[3] == ';':
+        start_text = text[:5]
+        text = text[4:]
+        for i in range(len(black_list)):
+            text = text.replace(black_list[i], '')
+        text = text.lower()
+        for i in range(len(text)):
+            text = text.replace('  ', ' ')
+        return text
+    else:
+        print("Некорректный ввод текста отзыва")
 
 
 def extract_keywords(text: str, keywords_dict: dict):