DRUPAL-5
array(1) { [0]=> string(8) "DRUPAL-5" }
DRUPAL-5--2
array(2) { [0]=> string(11) "DRUPAL-5--2" [1]=> string(1) "2" }
DRUPAL-5--2-3
array(3) { [0]=> string(13) "DRUPAL-5--2-3" [1]=> string(1) "2" [2]=> string(1) "3" }
DRUPAL-5--23-32
array(3) { [0]=> string(15) "DRUPAL-5--23-32" [1]=> string(2) "23" [2]=> string(2) "32" }