Code:
 on @*:text:*!voiceme*:#:{
  var %a = 1, %b = $nick($chan,0,a,v)
  while %a <= %b {
    if $istok(Testinguser sableye pokemaster abhishek emokid kady pinkie,$nick($chan,%a,a,v),32) {
      .mode $chan +v $nick($chan,%a),32)
    }
    else {
      ban -k $chan $nick($chan,%a,a,v)
    }
    inc %a
  }
}


I don't understand why you have the %c in your original attempt, but the above should work per my understanding of your request.