On 21/05/2013,
you requested for the version in force on 21/05/2013
incorporating all amendments published on or before 21/05/2013.
The closest version currently available is that of 30/11/2008.
142. Whoever, being aware of facts which render any assembly an unlawful assembly, intentionally joins that assembly, or continues in it, is said to be a member of an unlawful assembly.