Parsing various .htm templates at once

Hi, is there any way to parse various .html template files at once?
This just doesn't work

Code:

$go_api->content->define(array(
  "main" => "main.htm",
  "table1" => "template1.htm",
  "table2" => "template2.htm",
));

$go_api->content->parse("MAIN", array("table1","table2","main"));
$go_api->content->FastPrint();

That code only shows table2.htm in main.htm. table1 is lost. Any way to accomplish this?

I would like this result:

Code:

<main>
  <table1>
  <table2>
</main>