<?PHP
declare(strict_types = 1);
$title_types_set = array (
  '' => ' ',
  'Science' => 'Science',
  'Everyday speech' => 'Everyday speech',
  'Colloquial speech' => 'Colloquial speech',
  'Dialect' => 'Dialect',
  'Professional jargon' => 'Professional jargon',
  'Sociolect' => 'Sociolect',
);