diff --git a/includes/.fillit.h.swp b/includes/.fillit.h.swp
new file mode 100644
index 0000000..599640c
Binary files /dev/null and b/includes/.fillit.h.swp differ
diff --git a/includes/fillit.h b/includes/fillit.h
index 5be5d50..b964110 100644
--- a/includes/fillit.h
+++ b/includes/fillit.h
@@ -6,7 +6,7 @@
 /*   By: vmanzoni <vmanzoni@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2019/03/01 13:34:46 by vmanzoni          #+#    #+#             */
-/*   Updated: 2019/04/14 14:31:26 by vmanzoni         ###   ########.fr       */
+/*   Updated: 2019/04/14 16:32:21 by hulamy           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -36,4 +36,13 @@ char	*read_file(char *file);
 void	print_error(char *s, int fd);
 int		ft_file_errors(char *file);
 
+typedef struct			s_fillist
+{
+	int					id;
+	char				**tetraminos;
+	int					position[2];
+	int					size[2];
+	struct s_fillist	*next;
+}						t_fillist;
+
 #endif
diff --git a/srcs/add_to_list.c b/srcs/add_to_list.c
new file mode 100644
index 0000000..05f5f11
--- /dev/null
+++ b/srcs/add_to_list.c
@@ -0,0 +1,60 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   add_to_list.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/04/14 15:20:53 by hulamy            #+#    #+#             */
+/*   Updated: 2019/04/14 17:30:57 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../includes/fillit.h"
+#include <stdio.h>
+
+void	find_start_to_end(char **square, int *x1, int *x2, int *y1, int *y2)
+{
+	while (*y1 == 4 && !(*y1 = 0) && square[++(*x1)][0] != '#')
+		while (*y1 < 4 && square[*x1][*y1] != '#')
+			(*y1)++;
+	while (*y2 == 0 && (*y2 = 3) && square[--(*x2)][3] != '#')
+		while (*y2 > 0 && square[*x2][*y2] != '#')
+			(*y2)--;
+}
+
+void	reduce_tetraminos(char **square, t_fillist *list)
+{
+	int	x1;
+	int	x2;
+	int	y1;
+	int	y2;
+
+	x1 = -1;
+	x2 = 4;
+	y1 = 4;
+	y2 = 0;
+	find_start_to_end(square, &x1, &x2, &y1, &y2);
+	printf("de [%d,%d] a [%d,%d]\n",x1, y1, x2, y2);
+}
+
+int		add_to_list(char **square)
+{
+	t_fillist	*list;
+
+	square++;
+	printf("square[0] : %s\n", square[0]);
+	if (!(list = (t_fillist*)malloc(sizeof(*list))))
+		return (0);
+	reduce_tetraminos(square, list);
+	return (0);
+}
+
+int		main(int ac, char **av)
+{
+	if (ac == 5)
+	{
+		add_to_list(av);
+	}
+	return (0);
+}
diff --git a/srcs/main.c b/srcs/main.c
index 77a239f..db049da 100644
--- a/srcs/main.c
+++ b/srcs/main.c
@@ -6,7 +6,7 @@
 /*   By: vmanzoni <vmanzoni@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2019/02/12 13:20:48 by vmanzoni          #+#    #+#             */
-/*   Updated: 2019/04/14 14:39:28 by vmanzoni         ###   ########.fr       */
+/*   Updated: 2019/04/14 15:18:46 by hulamy           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */