select distinct substring(name,1,1) from stamps ,color_master where year(stamps.issue_date)=1966 and month(issue_date)=1 and color_master.color_code=stamps.color_code and color_master.color='Grey' order by substring(name,1,1)
IndianPost
Issue Date >> year >> 1966 >> month >> January >> Color >> Grey >> Alpha >> S >>