diff --git a/include/alphabet.hpp b/include/alphabet.hpp
index e534d6b33ad56b6e5c465f78345e14163f40268e..a6187d992157de6726bae595867945d489156a78 100644
--- a/include/alphabet.hpp
+++ b/include/alphabet.hpp
@@ -60,6 +60,11 @@ public:
     //! Affecte l'identifiant d'état à un état
     void setState(unsigned int i, const state& s);
 
+    void clearAlphabet() {etats.clear();}
+
+    void deleleLastState() {etats.pop_back();}
+
+
 };
 
 #endif // ALPHABET_H