diff --git a/42sh/includes/parser.h b/42sh/includes/parser.h
index 14293032..66ac51df 100644
--- a/42sh/includes/parser.h
+++ b/42sh/includes/parser.h
@@ -215,6 +215,16 @@ typedef struct s_stackmatch	t_stackmatch;
 
 extern t_stackmatch g_stackmatch[];
 
+struct	s_treematch	g_treemacth[];
+{
+	t_type	token;
+	void	(*add)(t_btree **ast, t_type )
+};		
+
+typedef struct s_treematch	t_treematch;
+
+extern t_treematch g_treematch[];
+
 int		ft_parse(t_btree **ast, t_list **token);
 int		produce_sym(t_sym stack, t_sym *new_sym, t_list **lst);
 int		eval_sym(t_sym stack, t_sym new_sym);
diff --git a/42sh/src/parser/build_tree.c b/42sh/src/parser/build_tree.c
new file mode 100644
index 00000000..1ba0fd59
--- /dev/null
+++ b/42sh/src/parser/build_tree.c
@@ -0,0 +1,12 @@
+#include "parser.h"
+
+t_treematch	g_treematch[] = 
+{
+	TK_WORD, 
+
+int	build_tree(t_btree **ast)
+{
+	int	i;
+
+	i = 0;
+	while (g