Fixed Flat File with record split on 2 rows

Very new to Pentaho... I need to read a fixed flat file with the following format

recA ----- fixed colum data here colums in format A -----
recB ----- fixed colum data here colums in format B -----
recA ----- fixed colum data here colums in format A -----
recB ----- fixed colum data here colums in format B -----
recA ----- fixed colum data here colums in format A -----
recB ----- fixed colum data here colums in format B -----
.
.
.

I am trying to figure out a way to read the file and merge the recA/recB into one row and map the fields to that I can then select the fields I want to write to a database table

so wind up with:
recA ----- fixed colum data here colums in format A -----recB ----- fixed colum data here colums in format B -----
recA ----- fixed colum data here colums in format A -----recB ----- fixed colum data here colums in format B -----
recA ----- fixed colum data here colums in format A -----recB ----- fixed colum data here colums in format B -----

Then I can write to a database table..

Any suggestions?