To make it clearer: for eg: 15 jan 2011 - 2000 16 feb 2011 - 2000 18 mar 2011 - 4000 15 apr 2011 - 2000 16may 2011 - 2000 19jun2011 - 3000 20jul2011 - 2000 16 aug 2011 - 4000 17 sep 2011 - 3000 18 oct 2011 - 2000 17 nov 2011 -2000 22 dec2011 - 3000 14 jan 2012 - 3000 can i give this period? from 15 ...