select distinct substring(name,1,1) from stamps ,paper_master,printsize_master,np_master where np_master.np_code=stamps.np_code and np_master.np='P' and paper_master.paper_code=stamps.paper_code and paper_master.paper='Unwatermarked paper' and printsize_master.printsize_code=stamps.printsize_code and printsize_master.printsize='2.98 x 2.5' order by substring(name,1,1)
IndianPost
Currency >> P >> Paper >> Unwatermarked paper >> Print Size >> 2.98 x 2.5 >> Alpha >> N >>