Symfony 2 optional route url parts (wildcard?)

In Symfony 2.2.1 Is it possible to create route like: /search/category_ids/1,2,3,4/subcategory_ids/32,23,9/language_ids/10,23,5 ... where every url part is optional, for example user could visit url /search/category_ids/1,2,3,4/language_ids/10,23,5 ... or even /search/subcategory_ids/2,23 I would like to get away from traditional get parameters in favor of this, mainly for aesthetic appeal.