Replace or Rename String in Between two tags in a line and return as string in java

I am trying to replace or rename a string/tags/keys in-between string in java.

Before jump into my string please notice that there should Bd and Bg and counts two times. Rename tags for the spouse section. its can remove duplicate and all key/tag is unique

My String is

Name : Abul Bashar Fakir , cl : Knit Fabrics Manufacturer , In : 16 June 2003 , Hpc : President , Hpd : Assistant Governor , Bd : April 6 , Bg : B + , Wd : September 27 , Sp : Hossneara Begum , Bd : March 8 , Bg : 0+ , Ma : 98  North Chasara  Narayanganj - 1400 , Tel : ( O ) 01617 008 519  ( R ) 763 2407 , Mob : 01715 393 127  01824 554 123 , Email : basharfokir66@gmail.com

Please notice that Here Bd and Bg count 2 times. one is for the main person and the other is for his/her spouse and Tag is Sp. I want to rename all Same tags for Sp with S character append. Example: Bd and Bg To SBd, SBg In-between Sp tag and Ma tag. it will create a unique tag for husband and spouse.

My Targeted String

Name : Abul Bashar Fakir , cl : Knit Fabrics Manufacturer , In : 16 June 2003 , Hpc : President , Hpd : Assistant Governor , Bd : April 6 , Bg : B + , Wd : September 27 , Sp : Hossneara Begum , SBd : March 8 , SBg : 0+ , Ma : 98  North Chasara  Narayanganj - 1400 , Tel : ( O ) 01617 008 519  ( R ) 763 2407 , Mob : 01715 393 127  01824 554 123 , Email : basharfokir66@gmail.com

> Note: It must return as a String.

You can use replace all from the String class. myString.replaceAll("bd", "Sbd")

If you need to create a unique tag for husband and spouse then
Use Java String replaceFirst() method and rename husband tags with a specific name.

 String str = "Name : Abul Bashar Fakir , cl : Knit Fabrics Manufacturer , In : 16 June 2003 , Hpc : President , Hpd : Assistant Governor , Bd : April 6 , Bg : B + , Wd : September 27 , Sp : Hossneara Begum , Bd : March 8 , Bg : 0+ , Ma : 98  North Chasara  Narayanganj - 1400 , Tel : ( O ) 01617 008 519  ( R ) 763 2407 , Mob : 01715 393 127  01824 554 123 , Email : basharfokir66@gmail.com

";

//Only Replace first 'Bd' with 'HBd' 
String str1 = str.replaceFirst("Bd", "HBd");