Add Row If Value Value In Column Change And Paste Specific Value Depending On The Change

I have used the below code to insert a new row when the value in coulmn A change. I now need to evolve it so that the new row will contain a specific value depending on the changing value:

Before:
Column A Column B
one test
one test
two test
two test
three test
three test

After:

Column A Column B
one test
one test
Coz two............................