Autoblog plugins and rewrite content

Hi, what pluging of autobloggin (wp-robot, autoblogged, wp-o-matic, etc) has option for rewrite content and randomize?
If no, what i should use for rewrite autoposts?

I want that when find keyword ABCDEF rewrite it with GHIJKL or MNOPQ or RSTVW keywords, randomize the keyword

Thanks