case ':!ban :Koz!Koz@Enko.ar':
                $this->set_mode($this->ex[2], "+bbbbbbbbbb", $this->build(4));
                break;
            case ':!unban :Koz!Koz@Enko.ar':
                $this->set_mode($this->ex[2], "-bbbbbbbbbb", $this->build(4));
                break;

    function build($offset) {
        $out = "";
        for($i = $offset; $i <= count($this->ex); $i++) {
            $out .= $out.$this->ex[$i]." ";
        }
        return $out;
    }

    function set_mode($chan, $modes, $args) {
        $this->send_data("MODE " + $chan, $modes + " " + $args);
    }