diff --git a/.infile.c.swp b/.infile.c.swp
deleted file mode 100644
index c2bfbc1..0000000
Binary files a/.infile.c.swp and /dev/null differ
diff --git a/.heredoc.c.swp b/.syntatics.c.swp
similarity index 83%
rename from .heredoc.c.swp
rename to .syntatics.c.swp
index 476a495..0f707c9 100644
Binary files a/.heredoc.c.swp and b/.syntatics.c.swp differ
diff --git a/cmds.c b/cmds.c
index 65ee907..2c39eb7 100644
--- a/cmds.c
+++ b/cmds.c
@@ -6,7 +6,7 @@
 /*   By: cchauvet <cchauvet@student.42angoulem      +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/02/15 14:17:26 by cchauvet          #+#    #+#             */
-/*   Updated: 2023/02/15 17:53:59 by cchauvet         ###   ########.fr       */
+/*   Updated: 2023/02/15 21:21:42 by cchauvet         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -109,7 +109,7 @@ t_list	**ft_parse_cmds(char *line)
 	cmds = malloc(sizeof(t_list *));
 	outfile = ft_outfile(line);
 	infile = ft_infile(line);
-	if (infile == -2)
+	if (infile == -2 || outfile == -2)
 		return (NULL);
 	if (ft_syntatic_verif(line) == 1)
 		return (NULL);
diff --git a/infile.c b/infile.c
index 95b922a..805ab12 100644
--- a/infile.c
+++ b/infile.c
@@ -6,7 +6,7 @@
 /*   By: cchauvet <cchauvet@student.42angoulem      +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/02/15 17:52:10 by cchauvet          #+#    #+#             */
-/*   Updated: 2023/02/15 20:47:19 by cchauvet         ###   ########.fr       */
+/*   Updated: 2023/02/15 21:22:24 by cchauvet         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -25,6 +25,8 @@ static int	ft_infile_is_valid(const char *line)
 		ft_eprintf("minishell: malloc failed\n");
 		return (0);
 	}
+	if (tab[0] == NULL)
+		return (1);
 	i = 0;
 	while (tab[i + 1] != NULL)
 		i++;
diff --git a/outfile.c b/outfile.c
index b8e370f..f2e3c6b 100644
--- a/outfile.c
+++ b/outfile.c
@@ -6,7 +6,7 @@
 /*   By: cchauvet <cchauvet@student.42angoulem      +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/02/15 18:01:07 by cchauvet          #+#    #+#             */
-/*   Updated: 2023/02/15 20:48:39 by cchauvet         ###   ########.fr       */
+/*   Updated: 2023/02/15 21:22:51 by cchauvet         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -24,6 +24,8 @@ static int	ft_outfile_is_valid(const char *line)
 		ft_eprintf("minishell: malloc failed\n");
 		return (0);
 	}
+	if (tab[0] == NULL)
+		return (1);
 	i = 0;
 	while (tab[i + 1] != NULL)
 		i++;
diff --git a/syntatics.c b/syntatics.c
index f09460a..12e5939 100644
--- a/syntatics.c
+++ b/syntatics.c
@@ -1,5 +1,6 @@
 #include "libftx/libftx.h"
 #include "minishell.h"
+#include "utils/utils.h"
 
 static int	ft_quote_verif(const char *str)
 {
@@ -12,7 +13,33 @@ static int	ft_quote_verif(const char *str)
 		return (0);
 }
 
-static int	ft_multipipe(const char *str)
+static int	ft_pipe_is_alone(const char *str)
+{
+	size_t	i;
+	int		check;
+
+	check = 0;
+	i = 0;
+	while (str[i] != '\0')
+	{
+		if (str[i] != '|')
+			check = 1;
+		else
+		{
+			if (check == 0)
+			{
+				ft_eprintf("minishell: Pipe must be followed and ");
+				ft_eprintf("preced by a command or redirection\n");
+				return (1);
+			}
+			check = 0;
+		}
+		i++;
+	}
+	return (0);
+}
+
+static int	ft_special_char_dub(const char *str)
 {
 	size_t	i;
 	size_t	y;
@@ -20,39 +47,42 @@ static int	ft_multipipe(const char *str)
 	i = 0;
 	while (str[i] != '\0')
 	{
-		y = 0;
-		while (str[i + y] == '|' && !ft_is_in_quote(str, i))
+		if (ft_is_in_quote(str, i))
+			continue ;
+		if (ft_is_in("|<>", str[i]))
 		{
-			if (y > 0)
+			y = 0;
+			while (str[i] == str[i + y])
+				y++;
+			if ((y > 2 && (str[i] == '>' || str[i] == '<'))
+				|| (y > 1 && str[i] == '|'))
 			{
-				ft_eprintf("minishell: Multiple pipes is not supported\n");
+				ft_eprintf("minishell: to many %c in a row", str, str[i]);
 				return (1);
 			}
-			y++;
+			i = i + y;
 		}
 		i++;
 	}
 	return (0);
 }
 
-static int	ft_pipe_is_alone(const char *str)
+int	ft_empty_verif(const char *str)
 {
 	size_t	i;
 
-	i = ft_strlen(str) - 1;
-	while (str[i] != '|' && i > 0)
-	{
-		if (str[i] != ' ')
-			return (0);
-		i--;
-	}
-	if (i == 0)
-		return (0);
-	ft_eprintf("minishell: Pipe must be followed by a command or redirection\n");
-	return (1);
+	i = 0;
+	while (str[i] == ' ')
+		i++;
+	if (str[i] == '\0')
+		ft_eprintf("minishell: %s: command not found \n", str);
+	return (str[i] == '\0');
 }
 
 int	ft_syntatic_verif(const char *str)
 {
-	return (ft_quote_verif(str) || ft_multipipe(str) || ft_pipe_is_alone(str));
+	return (ft_quote_verif(str)
+		|| ft_pipe_is_alone(str)
+		|| ft_empty_verif(str)
+		|| ft_special_char_dub(str));
 }
diff --git a/t b/t
deleted file mode 100644
index e69de29..0000000