===================================================================
--- original.js
+++ change.js
@@ -37,17 +37,19 @@
 	* If there is no more space in the grid, the game is over.
 ****/ 
 // Assets will be automatically created and loaded by the LK engine based on usage in the game code.
 // GridCell class for individual letters in the grid
-var GridCell = Container.expand(function (letter) {
+var GridCell = Container.expand(function (letter, assetName) {
 	var self = Container.call(this);
-	var cellGraphics = self.attachAsset('cell', {
+	var cellGraphics = self.attachAsset(assetName, {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
+	self.clickable = true; //Indique si la cellule est cliquable
 	self.letter = letter;
+	self.policeSize = 128;
 	var text = new Text2(letter.toUpperCase(), {
-		size: 128,
+		size: self.policeSize,
 		fill: "#ffffff"
 	});
 	self.texte = text;
 	self.texte.anchor.set(0.5, 0.5);
@@ -66,18 +68,18 @@
 		});
 	};
 	self.onClickCell = function () {
 		//Fonction appelée lors du click sur la cellule
-		if (!self.isClicked) {
+		if (!self.clickable) {
 			return;
 		}
 		self.isClicked = true;
 		self.setColorToLetter("#FF0000");
 	};
 	self.isClicked = false; //Indique si la cellule a été cliquée
 });
 // LettersGrid class for managing the grid of letters, same as WordGrid but with control of number of columns and lines
-var LettersGrid = Container.expand(function (columns, lines) {
+var LettersGrid = Container.expand(function (columns, lines, assetName) {
 	var self = Container.call(this);
 	self.gridColumns = columns;
 	self.gridLines = lines;
 	self.cellSize = 1280 / self.gridColumns;
@@ -87,9 +89,9 @@
 	self.initializeGrid = function () {
 		for (var i = 0; i < self.gridLines; i++) {
 			self.cells[i] = [];
 			for (var j = 0; j < self.gridColumns; j++) {
-				var cell = new GridCell('');
+				var cell = new GridCell('', assetName);
 				cell.x = j * self.cellSize + self.cellSize / 2;
 				cell.y = i * self.cellSize + self.cellSize / 2;
 				self.addChild(cell);
 				self.cells[i][j] = cell;
@@ -98,9 +100,9 @@
 				cell.on('down', function () {
 					//Fonction appelée lors du click sur la cellule
 					this.onClickCell();
 				});
-				cell.clickable = !self.clickable;
+				cell.clickable = self.clickable;
 				self.emptyCells.push(cell);
 			}
 		}
 	}; //Fin de la fonction initializeGrid
@@ -154,8 +156,18 @@
 			}
 		}
 		return true;
 	}; //Fin de la fonction isFull
+	self.isEmpty = function () {
+		for (var i = 0; i < self.gridLines; i++) {
+			for (var j = 0; j < self.gridColumns; j++) {
+				if (self.cells[i][j].letter !== '') {
+					return false;
+				}
+			}
+		}
+		return true;
+	}; //Fin de la fonction isEmpty
 	self.colorAllCells = function (color) {
 		for (var i = 0; i < self.gridLines; i++) {
 			for (var j = 0; j < self.gridColumns; j++) {
 				self.cells[i][j].setColorToLetter(color);
@@ -195,13 +207,15 @@
 	anchorX: 0.5,
 	anchorY: 0
 });
 LK.gui.top.addChild(scoreTestText);
-var lettersGrid = game.addChild(new LettersGrid(3, 1));
+var policeSize = 128;
+var lettersGrid = game.addChild(new LettersGrid(3, 1, 'cell'));
+lettersGrid.clickable = false;
 lettersGrid.initializeGrid();
 lettersGrid.x = (game.width - lettersGrid.gridColumns * lettersGrid.cellSize) / 2;
 lettersGrid.y = ScoreZone.height + lettersGrid.height / 2;
-var mainGrid = game.addChild(new LettersGrid(6, 6));
+var mainGrid = game.addChild(new LettersGrid(6, 6, 'cellWord'));
 mainGrid.initializeGrid();
 mainGrid.x = (game.width - mainGrid.gridColumns * mainGrid.cellSize) / 2;
 mainGrid.y = ScoreZone.height + 2 * lettersGrid.height;
 var lettersToAdd = [];
@@ -209,8 +223,9 @@
 var wordsToBegin = pickAndShakeWords(1); // Pick and shuffle words from the main list
 if (wordsToBegin.length > 0) {
 	// If there are words to begin 
 	stackLettersFromWords(wordsToBegin); // Stack letters from words to add them to the grid
+	transfertLettersToGrid(); // Transfer letters to the grid
 }
 /**** 
 * Functions
 ****/ 
@@ -245,17 +260,24 @@
 			lettersToAdd.push(letters[j]);
 		}
 	}
 } //Fin de la fonction stackLettersFromWords
+//Fonction transfertLettersToGrid : permet de transférer les lettres de la liste lettersToAdd dans la grille principale
+function transfertLettersToGrid() {
+	for (var i = 0; i < lettersGrid.gridColumns && lettersToAdd.length > 0; i++) {
+		mainGrid.addRandomLetter(lettersToAdd[0]);
+		lettersToAdd.splice(0, 1);
+	}
+} //Fin de la fonction transfertLettersToGrid
 game.update = function () {
 	updateScoreTest(scoreTest);
 	if (LK.ticks % 60 == 0) {
-		//Si la liste des lettres à ajouter n'est pas vide, on ajoute toutes les lettres puis on vide la liste
-		if (lettersToAdd.length > 0) {
-			for (var i = 0; i < lettersToAdd.length; i++) {
-				lettersGrid.addRandomLetter(lettersToAdd[i]);
+		//Si la liste des lettres à ajouter n'est pas vide, on ajoute toutes les lettres puis on supprime les lettres de la liste
+		if (lettersToAdd.length > 0 && lettersGrid.isEmpty()) {
+			for (var i = 0; i < lettersGrid.gridColumns && lettersToAdd.length > 0; i++) {
+				lettersGrid.addRandomLetter(lettersToAdd[0]);
+				lettersToAdd.splice(0, 1);
 			}
-			lettersToAdd = [];
 		}
 		currentLetterIndex = (currentLetterIndex + 1) % lettersToAdd.length;
 		if (mainGrid.isFull()) {
 			mainGrid.colorAllCells("#FF0000");