It should

ChanServ is clone of FreedomRules and Jared
geem is clone of Phatt_One and snow[a]
geem is clone of Phatt_One and snow[a]
geem is clone of Phatt_One and snow[a]
Elder is clone of FC970
fryz is clone of HttpStats and Kopete
fryz is clone of HttpStats and Kopete

i've noticved that some mIRC clients even though same version depending scripts it has hard time using $address(nick,4) it will return null sometimes otherwise it works this is why I did a null check to start the script.

here it is again never know if i missed a bracket while editing live on here.

Code:
alias clonescan {
  var %x = 1
  while (%x <= $nick($active,0)) {
    if (!$address($nick($active,%x),4)) { inc %x | goto END }
    elseif ($ial($address($nick($active,%x),4),0).host > 1) {
      if ($ial($address($nick($active,%x),4),0).host == 2) {
        echo -a $ial($address($nick($active,%x),4),1).nick is clone of $ial($address($nick($active,%x),4),2).nick
      }
      elseif ($ial($address($nick($active,%x),4),0).host == 3) {
        echo -a $ial($address($nick($active,%x),4),1).nick is clone of $ial($address($nick($active,%x),4),2).nick and $ial($address($nick($active,%x),4),3).nick
      }
    }
    else { inc %x }
    inc %x
    :END
  }
}