diff --git a/Project_Model/Libs/BPE/Classes/Encoder.py b/Project_Model/Libs/BPE/Classes/Encoder.py
new file mode 100644
index 0000000..800772b
--- /dev/null
+++ b/Project_Model/Libs/BPE/Classes/Encoder.py
@@ -0,0 +1,4 @@
+from abc import ABC
+
+class Encoder(ABC):
+    pass
\ No newline at end of file
diff --git a/Project_Model/Libs/BPE/Classes/NanoSocratesSpecial.py b/Project_Model/Libs/BPE/Classes/NanoSocratesSpecial.py
new file mode 100644
index 0000000..e551d6c
--- /dev/null
+++ b/Project_Model/Libs/BPE/Classes/NanoSocratesSpecial.py
@@ -0,0 +1,54 @@
+from .Encoder import Encoder
+from ..Errors import OutOfDictionaryException
+
+class NanoSocratesSpecial(Encoder):
+
+    def __init__(
+        self,
+        initial_vocabulary: list[str] | None = None
+    ) -> None:
+        super().__init__()
+
+        self.__vocabulary: dict[str, int] = {}
+        self.__reverse_vocabulary: dict[int, str] = {}
+        self.__current_index = 0
+
+        if initial_vocabulary is None:
+            return
+
+        for word in initial_vocabulary:
+
+            CURRENT_INDEX = self.__current_index
+            self.__vocabulary[word] = CURRENT_INDEX
+            self.__reverse_vocabulary[CURRENT_INDEX] = word
+
+            self.__current_index += 1
+
+    @property
+    def vocabulary_size(self):
+        return self.__current_index
+
+    def add_special_word(self, word:str):
+        CURRENT_INDEX = self.__current_index
+        self.__vocabulary[word] = CURRENT_INDEX
+        self.__reverse_vocabulary[CURRENT_INDEX] = word
+        self.__current_index += 1
+
+    def encode(self, word: str) -> list[int]:
+        ID = self.__vocabulary.get(word)
+
+        if ID is None:
+            raise OutOfDictionaryException()
+
+        return [ID]
+
+    def decode(self, token_id: int) -> str:
+
+        ID = token_id
+        WORD = self.__reverse_vocabulary.get(ID)
+
+        if WORD is None:
+            raise OutOfDictionaryException()
+
+        return WORD
+
diff --git a/Project_Model/Libs/BPE/Errors/OutOfDictionaryException.py b/Project_Model/Libs/BPE/Errors/OutOfDictionaryException.py
new file mode 100644
index 0000000..2c4c440
--- /dev/null
+++ b/Project_Model/Libs/BPE/Errors/OutOfDictionaryException.py
@@ -0,0 +1,4 @@
+class OutOfDictionaryException(Exception):
+
+    def __init__(self, *args: object) -> None:
+        super().__init__(*args)
\ No newline at end of file