I have this code, but it’s not passing the last test case. Not sure how to indent the asterisks properly.
public function pair(string $a, string $b): string
{
$initialsLine = "** {$this->initials($a)} + {$this->initials($b)} **";
return <<<HEART
****** ******
** ** ** **
** ** ** **
** * **
** **
$initialsLine
** **
** **
** **
** **
** **
** **
***
*
HEART;
}