ANDROID = ("Mozilla/5.0 (Linux; Android 4.4.2; Nexus 4 Build/KOT49H) "
           "AppleWebKit/537.36 (KHTML, like Gecko) Chrome/34.0.1847.114 Mobile Safari/537.36")
CHROME = ("Mozilla/5.0 (Windows NT 10.0; Win64; x64) "
          "AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36")
CHROME_OS = ("Mozilla/5.0 (X11; CrOS armv7l 4537.56.0) "
             "AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.38 Safari/537.36")
IE_11 = "Mozilla/5.0 (MSIE 10.0; Windows NT 6.1; Trident/5.0)"
IE_6 = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; WOW64; Trident/4.0; SLCC1)"
IE_7 = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; WOW64; Trident/4.0; SLCC1)"
IE_8 = "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; WOW64; Trident/4.0; SLCC1)"
IE_9 = "Mozilla/5.0 (MSIE 9.0; Windows NT 6.1; Trident/5.0)"
IPHONE_6 = ("Mozilla/5.0 (iPhone; CPU iPhone OS 6_0 like Mac OS X) "
            "AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A5376e Safari/8536.25")
IPAD = ("Mozilla/5.0 (iPad; CPU OS 6_0 like Mac OS X) "
        "AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A5376e Safari/8536.25")
WINDOWS_PHONE_8 = ("Mozilla/5.0 (compatible; MSIE 10.0; Windows Phone 8.0; "
                   "Trident/6.0; IEMobile/10.0; ARM; Touch; NOKIA; Lumia 920)")
SAFARI_8 = ("Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_4) "
            "AppleWebKit/600.7.12 (KHTML, like Gecko) Version/8.0.7 Safari/600.7.12")
SAFARI_7 = ("Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_3) "
            "AppleWebKit/537.75.14 (KHTML, like Gecko) Version/7.0.3 Safari/7046A194A")
FIREFOX = "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:50.0) Gecko/20100101 Firefox/50.0"
FIREFOX_MAC = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10; rv:33.0) Gecko/20100101 Firefox/33.0"
OPERA = "Opera/9.80 (Windows NT 6.0) Presto/2.12.388 Version/12.14"
