(?:
(?:course|view_play_list|my_playlists|artist|playlist|watch|embed/(?:videoseries|[0-9A-Za-z_-]{11}))
\? (?:.*?[&;])*? (?:p|a|list)=
(?:
(?:course|view_play_list|my_playlists|artist|playlist|watch|embed/(?:videoseries|[0-9A-Za-z_-]{11}))
\? (?:.*?[&;])*? (?:p|a|list)=