    public static function getWord($word)
    {
        $ctt = '';
        for ($i=0; $i<strlen($word); $i++) {
            $ctt .= self::getLetter($word{$i})
                .str_pad(self::$SPACE_CHARACTER, self::$LETTERS_SPACING_LENGTH, self::$SPACE_CHARACTER);
        }
        return $ctt;
    }