private void enqueueFreeElements(boolean[][] checkValidation , byte[] limites , TermQ currentPoint )
	{
		for(int i= limites[0]; i< limites[2];i++)
		{
			for(int j=limites[1] ; j<limites[3];j++)
			{
				if(checkValidation[i][j])
				{
					TermQ newTerm = new TermQ(i,j);
					newTerm.setLevel(currentPoint.level);
					newTerm.setParent(currentPoint);
					checkValidation[i][j]=false;
					path.enqueue(newTerm);
				}
			}
		}
	}