Method for copying kerning from class to class?

Hmm. Now I am confused. This is hard to wrap my mind around. Say my kerning table reads:

pos @h @a +10

I copy pairs from @h to @h-accent, so now the table reads:

pos @h @a +10 
pos @h-accent @a +10

Then I copy @a to @a-accent, and finally the table reads:

pos @h @a +10
pos @h @a-accent +10
pos @h-accent @a +10
pos @h-accent @a-accent +10

Would this work, or am I missing something? If so, I can use Toshi’s script.

I am not worried about keeping it up to date. I have the kerning already, I just want to split the classes.