Import list of servers, export their member of groups

I have a list of servers in a text file, and I would like a script to say if they are in a particular group (I have several similarlay named groups - and need to know when the server ISN'T in any of these)

I've found a script that would import the server list and tell me if it's in an Admin group - can I just duplicate the lines where the admin account is and retype with each of my groups?

$servers= get-content 'c:\input\test.txt'$output='c:\output\test.csv' $results= @()foreach($serverin$servers)
{
$admins= @()
$group=[ADSI]"WinNT://$server/Administrators"$members= @($group.psbase.Invoke("Members"))$members | foreach {$obj= new-object psobject -Property @{
 Server =$Server
 Admin =$_.GetType().InvokeMember("Name", 'GetProperty', $null, $_, $null)
 }$admins+=$obj
 } $results+=$admins
}$results| Export-csv $Output-NoTypeInformation