RMAN list backup question

I need to create a duplicate database and will not be using the "from active database" connection.  I am going to move the backups that will be used to a shared location.  My question is what files do I move to the shared location...and more specifically what files in my list backup command constitute a "complete" set of files needed to create the duplicate.  I seem to have multiple backupsets...a mix of level 0 and level 1 backups and because of space concerns I want to move the minimum amount of files.  If I move all the files in the