1 - read subdomains from built-in list
	1.1 - without saving output
	1.2 - saving output
		1.2.1 - txt format
		1.2.2 - CSV format
2 - read subdomains from wordlist file
	2.1 - without saving output
	2.2 - saving output
		2.2.1 - txt format
		2.2.2 - CSV format
