Namaste, Pls read the 1st page of the link document below: .......... http://sanskritacademy.delhi.gov.in/wps/wcm/connect/84a7f680471bbdda834dff7d994b04ce/PRATHAMH+PATHH+%281%29.pdf?MOD=AJPERES&lmod=874762595&CACHEID=84a7f680471bbdda834dff7d994b04ce ......... Your doubt will be cleared.. rgs, sriram