Multiple http_request iRules not working Same Virtual server

when HTTP_REQUEST {

if { ([string tolower [HTTP::host]] equals "energy.com")

HTTP::respond 301 location "https://www.[HTTP::host][HTTP::uri]" Connection Close
}
}

when HTTP_REQUEST {

if { ([string tolower [HTTP::host]] equals "corporate.ndtv.com")} {
HTTP::respond 301 location "https://www.ndtv.com" Connection Close
}
}

when HTTP_REQUEST {
switch [string tolower [HTTP::host]] {
"exxonmobil.eu" {
HTTP::respond 301 Location "https://www.[HTTP::host][HTTP::uri]" "Connection" "Close"
return
}
"corporate.exxonmobil.com.qa" {
HTTP::respond 301 Location "https://www.exxonmobil.com.qa" "Connection" "Close"
return
}
}
}

when HTTP_REQUEST {
if { [string tolower [HTTP::host]] equals "energy.com" } {
HTTP::respond 301 Location "https://www.[HTTP::host][HTTP::uri]" "Connection" "Close"
return
} elseif { [string tolower [HTTP::host]] equals "corporate.ndtv.com" } {
HTTP::respond 301 Location "https://www.ndtv.com" "Connection" "Close"
return
}
}

much appreciate your response 

one more info need - syntax for add more url 

how to add these website as well -- goodenergy.com,  oddenergy.com  etc ... in below 

when HTTP_REQUEST {

if { [string tolower [HTTP::host]] equals "energy.com" } {
HTTP::respond 301 Location "https://www.[HTTP::host][HTTP::uri]" "Connection" "Close"
return

&

when HTTP_REQUEST {
switch [string tolower [HTTP::host]] {
"energy.com" {
HTTP::respond 301 Location "https://www.[HTTP::host][HTTP::uri]" "Connection" "Close"
return

>>>>>>>>>>>>

how add multi sites in below syntax

marketing.ndtv.com" as well

"corporate.ndtv.com" {
HTTP::respond 301 Location "https://www.ndtv.com" "Connection" "Close"
return