$res .= sprintf "%dw", $weeks   if $weeks;
    $res .= sprintf "%dd", $days    if $days;
    $res .= sprintf "%dh", $hours   if $hours;
    $res .= sprintf "%dm", $minutes if $minutes;
    $res .= sprintf '%ds', $seconds;

##</code><code>##

 $res .= sprintf "%dw", $weeks   if                                $weeks;
 $res .= sprintf "%dd", $days    if                       $days or $weeks;
 $res .= sprintf "%dh", $hours   if             $hours or $days or $weeks;
 $res .= sprintf "%dm", $minutes if $minutes or $hours or $days or $weeks;
 $res .= sprintf '%ds', $seconds;