Theres probably a better solution but...
Code:
  var %chans = #1 #2 #3 #4 #5 #6
  var %a,%b
  while %chans { var %a = $gettok(%chans,$r(1,$numtok(%chans,32)),32),%b = $addtok(%b,%a,44),%chans = $remtok(%chans,%a,1,32) }
  Join %b