====Good====

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6) Gecko/20040113
Mozilla/5.0 (Linux; Android 11; Lenovo YT-J706X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36
Mozilla/5.0 (iPhone14,6; U; CPU iPhone OS 15_4 like Mac OS X) AppleWebKit/602.1.50 (KHTML, like Gecko) Version/10.0 Mobile/19E241 Safari/602.1

====Bad====

not/a (valid) user/agent
