Route not work with regex

I have reoutes with custom placeholder like:

Code:

// route
$routes->addPlaceholder('unique', '([a-z0-9]{40}|all)$');
$routes->addPlaceholder('tab', '(?:^|done|in-progress)$');

$routes->get('(:unique)', 'Pages::browse/$1');
$routes->get('(:unique)/(:tab)', 'Pages::browse/$1/$2');

Code:

// controller
public function browse($o = 'one', $t= 'two')
{
    echo($o);
    echo('<br/>');
    echo($t);
}

When accessed like http://localhost:8080/all
show

Code:

all
two

but when accessed with http://localhost:8080/all/done just show 404.

by edit the route with

Code:

$routes->get('(:unique)/(:any)', 'Pages::browse/$1/$2');

show

Code:

all
done

whats wrong with the regex?