Audit Assistant

I am working in an audit firm as audit assistant (Not articled assistant) from past 3 years and i have cleared 1 group of PE 2 and i am appearing in june 2009 for 1group .

i heard that if i produce my bank statement & cerificate of work from my pricipal i may get the exemption of Articleship upto 6 months for certificate of work for  8 months , my question is what is the maximum period in my case for 3 years after completion of PE 2