Yeah.. Seranna is a great song, and show lotsa ways
to sweep... but there are mostly 3 pattern(mades) 5 string sweeps.. both in minor and major(= 6 patterns)...

Another thing is to take a Malmsteen theme,
rewrite it.. and u got a awsomne sweep excercise...

http://www.ultimateguitarpage.com

Here they got some vids of sweeping too..