diff --git a/src/commands/add.🗿 b/src/commands/add.🗿
index aee9cad..8ea9dae 100644
--- a/src/commands/add.🗿
+++ b/src/commands/add.🗿
@@ -20,7 +20,11 @@ cmd_add(text, args)
 		{
 			if (i == [text + LOCATION_CURRENT_LINE] + 1 | i == [text + LOCATION_LENGTH])
 			{
-				[tmp + i] = line;
+				[tmp + i] = galloc(MAP_SIZE);
+				if ([tmp + i] == NULL)
+					return 1;
+				[[tmp + i] + MAP_KEY] = id++;
+				[[tmp + i] + MAP_VALUE] = line;
 				j++;
 			}
 			[tmp + i + j] = [[text + LOCATION_ARRAY] + i];
diff --git a/src/commands/delete.🗿 b/src/commands/delete.🗿
index 988eacb..40dee42 100644
--- a/src/commands/delete.🗿
+++ b/src/commands/delete.🗿
@@ -1,13 +1,20 @@
-cmd_delete(text, args)
+cmd_delete(data, args)
 {
 	local i;
 
-	i = [text + LOCATION_CURRENT_LINE];
-	[text + LOCATION_LENGTH] = [text + LOCATION_LENGTH] - 1;
+	if ([data + LOCATION_LENGTH] == 0)
+	{
+		error(data, "line doesn't exist");
+		return 1;
+	}
+	i = [data + LOCATION_CURRENT_LINE];
+	[data + LOCATION_LENGTH] = [data + LOCATION_LENGTH] - 1;
+	free([[[data + LOCATION_ARRAY] + LOCATION_CURRENT_LINE] + MAP_VALUE]);
+	free([[data + LOCATION_ARRAY] + LOCATION_CURRENT_LINE]);
 	loop
 	{
-		if (i == [text + LOCATION_LENGTH])
+		if (i == [data + LOCATION_LENGTH])
 			return 0;
-		[[text + LOCATION_ARRAY] + i] = [[text + LOCATION_ARRAY] + i + 1];
+		[[data + LOCATION_ARRAY] + i] = [[data + LOCATION_ARRAY] + i + 1];
 	}
 }
diff --git a/src/commands/numered.🗿 b/src/commands/numered.🗿
index 3ef92ec..c0c0f6c 100644
--- a/src/commands/numered.🗿
+++ b/src/commands/numered.🗿
@@ -7,6 +7,6 @@ cmd_numbered(text, args)
 	}
 	putnum([text + LOCATION_CURRENT_LINE] + 1);
 	putchar('\t');
-	putstr([[text + LOCATION_ARRAY] + [text + LOCATION_CURRENT_LINE]]);
+	putstr([[[text + LOCATION_ARRAY] + [text + LOCATION_CURRENT_LINE]] + MAP_VALUE]);
 	putchar('\n');
 }
diff --git a/src/commands/print.🗿 b/src/commands/print.🗿
index 768fc45..5dc3e68 100644
--- a/src/commands/print.🗿
+++ b/src/commands/print.🗿
@@ -5,6 +5,6 @@ cmd_print(text, args)
 		putstr("Empty buffer\n");
 		return 1;
 	}
-	putstr([[text + LOCATION_ARRAY] + [text + LOCATION_CURRENT_LINE]]);
+	putstr([[[text + LOCATION_ARRAY] + [text + LOCATION_CURRENT_LINE]] + MAP_VALUE]);
 	putchar('\n');
 }
diff --git a/src/main.🗿 b/src/main.🗿
index 52d59e5..a50bc3c 100644
--- a/src/main.🗿
+++ b/src/main.🗿
@@ -1,6 +1,8 @@
-enum LOCATION_LENGTH, LOCATION_CURRENT_LINE, LOCATION_ARRAY;
+enum LOCATION_LENGTH, LOCATION_CURRENT_LINE, LOCATION_ARRAY, LOCATION_MODE;
+enum MODE_PRINT, MODE_NO_PRINT;
+define DATA_SIZE=4;
 
-parsing(text, cmd_ptr)
+parsing(data, cmd_ptr)
 {
 	local input;
 	local tmp;
@@ -18,14 +20,14 @@ parsing(text, cmd_ptr)
 	if (isdigit([input]) == 1)
 	{
 		line_application = aton(input);
-		if (line_application == 0 | line_application >= [text + LOCATION_LENGTH] + 1)
+		if (line_application == 0 | line_application >= [data + LOCATION_LENGTH] + 1)
 		{
 			[cmd_ptr] = NULL;
 			putstr("invalid line\n");
 			free(input);
 			return 0;
 		}
-		[text + LOCATION_CURRENT_LINE] = line_application - 1;
+		[data + LOCATION_CURRENT_LINE] = line_application - 1;
 	}
 	tmp = input;
 	loop
@@ -43,43 +45,50 @@ parsing(text, cmd_ptr)
 		return 1;
 }
 
+global id=0;
 
 main()
 {
-	local text;
+	local data;
 	local cmd;
 
-	text = galloc(3);
-	if (text == NULL)
+	data = galloc(DATA_SIZE);
+	if (data == NULL)
 		return 1;
-	[text + LOCATION_CURRENT_LINE] = 0 - 1;
-	[text + LOCATION_LENGTH] = 0;
-	[text + LOCATION_ARRAY];
-	[text + LOCATION_ARRAY] = galloc(0);
-	if ([text + LOCATION_ARRAY] == NULL)
+	[data + LOCATION_MODE] = 0;
+	[data + LOCATION_CURRENT_LINE] = 0 - 1;
+	[data + LOCATION_LENGTH] = 0;
+	[data + LOCATION_ARRAY];
+	[data + LOCATION_ARRAY] = galloc(2);
+	if ([data + LOCATION_ARRAY] == NULL)
 	{
-		free(text);
+		free(data);
+		return 1;
+	}
+	[[data + LOCATION_ARRAY] + MAP_KEY] = id++;
+	[[data + LOCATION_ARRAY] + MAP_VALUE] = galloc(0);
+	if ([[data + LOCATION_ARRAY] + MAP_VALUE] == NULL)
+	{
+		free([data + LOCATION_ARRAY]);
+		free(data);
 		return 1;
 	}
 	loop
 	{
-		if (parsing(text, &cmd))
+		if (parsing(data, &cmd))
 			return 1;
 		if (cmd != NULL)
 		{
 			if (strcmp(cmd, "a") == 0)
-				cmd_add(text, NULL);
+				cmd_add(data, NULL);
 			else if (strcmp(cmd, "p") == 0)
-				cmd_print(text, NULL);
+				cmd_print(data, NULL);
 			else if (strcmp(cmd, "n") == 0)
-				cmd_numbered(text, NULL);
+				cmd_numbered(data, NULL);
 			else if (strcmp(cmd, "d") == 0)
-				cmd_delete(text, NULL);
+				cmd_delete(data, NULL);
 			else
-			{
-				putstr("cmd not foud");
-				putchar('\n');
-			}
+				error(data, "cmd not foud");
 			free(cmd);
 		}
 	}
diff --git a/src/utils.🗿 b/src/utils.🗿
index 2a06ae1..e619451 100644
--- a/src/utils.🗿
+++ b/src/utils.🗿
@@ -11,3 +11,14 @@ line_pos_to_cursor(text, line_pos)
 		line_pos--;
 	}
 }
+
+error(data, description)
+{
+	if ([data + LOCATION_MODE] == MODE_PRINT)
+	{
+		putstr(description);
+		putchar('\n');
+	}
+	else
+		putstr("?\n");
+}