public static function configure(array $config = [])
    {
        $config = array_merge(
            [
                'wordsPerMinute' => self::$wordsPerMinute,
                'secondsPerImage' => self::$secondsPerImage,
                'codewordsPerMinute' => self::$codewordsPerMinute,
            ],
            $config
        );
        self::$wordsPerMinute = $config['wordsPerMinute'];
        self::$secondsPerImage = $config['secondsPerImage'];
        self::$codewordsPerMinute = $config['codewordsPerMinute'];
    }