diff --git a/parsing/ft_split.c b/parsing/ft_split.c
new file mode 100644
index 0000000..8c136cd
--- /dev/null
+++ b/parsing/ft_split.c
@@ -0,0 +1,93 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_split.c                                         :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: mteriier <mteriier@student.42lyon.fr>      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/11/11 15:34:04 by mteriier          #+#    #+#             */
+/*   Updated: 2025/11/13 14:55:21 by mteriier         ###   ########lyon.fr   */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+static size_t	count_words(char const *s, char c)
+{
+	size_t	i;
+	size_t	len;
+	size_t	tester;
+
+	i = 0;
+	len = 0;
+	while (s[i])
+	{
+		while (s[i] == c && s[i])
+			i++;
+		tester = 0;
+		while (s[i] != c && s[i])
+		{
+			tester++;
+			i++;
+		}
+		if (tester > 0)
+			len++;
+	}
+	return (len);
+}
+
+static size_t	len_word(size_t i, char const *s, char c)
+{
+	size_t	len;
+
+	len = 0;
+	while (s[i])
+	{
+		while (s[i] != c && s[i])
+		{
+			len++;
+			i++;
+		}
+		return (len);
+	}
+	return (len);
+}
+
+static void	free_tab(char **tab)
+{
+	int	i;
+
+	i = 0;
+	while (tab[i])
+		free(tab[i++]);
+	free(tab);
+}
+
+char	**ft_split(char const *s, char c)
+{
+	size_t	i;
+	size_t	j;
+	char	**big_tab;
+
+	big_tab = malloc((count_words(s, c) + 1) * sizeof(char *));
+	if (!big_tab)
+		return (0);
+	i = 0;
+	j = 0;
+	while (s[i])
+	{
+		while (s[i] == c && s[i])
+			i++;
+		if (s[i])
+		{
+			big_tab[j] = ft_substr(s, i, len_word(i, s, c));
+			if (!big_tab[j])
+				return (free_tab(big_tab), NULL);
+			j++;
+		}
+		while (s[i] != c && s[i])
+			i++;
+	}
+	big_tab[j] = 0;
+	return (big_tab);
+}
diff --git a/parsing/ft_strlen.c b/parsing/ft_strlen.c
new file mode 100644
index 0000000..67cba28
--- /dev/null
+++ b/parsing/ft_strlen.c
@@ -0,0 +1,23 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strlen.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: mteriier <mteriier@student.42lyon.fr>      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/11/06 13:25:17 by mteriier          #+#    #+#             */
+/*   Updated: 2025/11/13 11:24:39 by mteriier         ###   ########lyon.fr   */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <string.h>
+
+size_t	ft_strlen(const char *s)
+{
+	size_t	i;
+
+	i = 0;
+	while (s[i])
+		i++;
+	return (i);
+}
diff --git a/parsing/ft_substr.c b/parsing/ft_substr.c
new file mode 100644
index 0000000..24a4069
--- /dev/null
+++ b/parsing/ft_substr.c
@@ -0,0 +1,40 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_substr.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: mteriier <mteriier@student.42lyon.fr>      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/11/11 13:46:41 by mteriier          #+#    #+#             */
+/*   Updated: 2025/11/13 13:42:37 by mteriier         ###   ########lyon.fr   */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+char	*ft_substr(char const *s, unsigned int start, size_t len)
+{
+	size_t	len_s;
+	size_t	i;
+	char	*tmp;
+
+	if (!s)
+		return (0);
+	len_s = ft_strlen(s);
+	if (len_s < start)
+		len = 0;
+	if (len > len_s - start)
+		len = len_s - start;
+	tmp = malloc((len + 1) * sizeof(char));
+	if (!tmp)
+		return (0);
+	i = 0;
+	while (i < len)
+	{
+		tmp[i] = s[start];
+		i++;
+		start++;
+	}
+	tmp[i] = '\0';
+	return (tmp);
+}
diff --git a/parsing/parsing.c b/parsing/parsing.c
index 7a7c0f6..4ab2c44 100644
--- a/parsing/parsing.c
+++ b/parsing/parsing.c
@@ -14,14 +14,21 @@
 #include "parsing.h"
 #include <stdlib.h>
 
-static t_stack	*parsing(int argc, char **argv)
+static int	wich_mod(int mod)
+{
+	if (mod == 0 || mod == 3)
+		return (1);
+	return (2);
+}
+
+static t_stack	*parsing(int argc, char **argv, int mod)
 {
 	int		i;
 	int		stock;
 	t_stack	*first;
 	t_stack	*new;
 
-	i = 1;
+	i = wich_mod(mod);
 	first = NULL;
 	while (i < argc)
 	{
@@ -40,7 +47,14 @@ static t_stack	*parsing(int argc, char **argv)
 	return (first);
 }
 
-t_stacks	*init_big_stacks(int argc, char **argv)
+static t_stack	*special_parsing(int argc, char **argv, int mod)
+{
+	t_stacks	*piles;
+	t_stack		*first;
+	t_stack		*new;
+}
+
+t_stacks	*init_piles(int argc, char **argv, int mod)
 {
 	t_stacks	*stacks;
 	t_stack		*a;
@@ -50,7 +64,7 @@ t_stacks	*init_big_stacks(int argc, char **argv)
 	stacks->b = NULL;
 	if (!stacks)
 		return (NULL);
-	a = parsing(argc, argv);
+	a = parsing(argc, argv, mod);
 	stacks->a = a;
 	return (stacks);
 }