Debatch flat file with header and trailer with tag identifiers

Hello Friends

i have a flat file with header and trailers with Tag Identifiers as HH and TT respectively.

body part (or document part) has 2 records repeating, of which only one record has Tag identifier as B like below

[code]

HHheader

Bbody

body

Bbody

body

Bbody

body

TTtrailer

 [/code]

now i want to debatch this file to get each single file to contain output like below

[code] 

Bbody

body

 [/code]

could you let me know how we can handle this scenario.