Update tokenizer

main.py

@@ -1,7 +1,7 @@
 import math
 
 similar_letters = {"й": "и", "ё": "е", "e": "е", "t": "т", "i": "l", "o": "о", "k": "к", "3": "з", "a": "а", "x": "х", "c": "с", "m": "м"}
-letters = "qwertyuiopasdfghjklzxcvbnmёйцукенгшщзхъфывапролджэячсмитьбю"
+letters = "qwertyuiopasdfghjklzxcvbnmёйцукенгшщзхъфывапролджэячсмитьбю "
 
 def countwords(x):
     temp = {}
@@ -41,6 +41,8 @@ class Chatbot:
                     preprocess += similar_letters[x]
                 else:
                     preprocess += x
+            else:
+                preprocess += " "+x+" "
         return preprocess.split()
     def train(self, data: dict):
         lendata = len(data)