CAJUN ACCORDION DISCUSSION GROUP
The reed set up is LMMH.
[from back to front, as you hold it to play...]
MMLH on "some" but not all one row instruments..
As described.. common to Cajun instruments but some builders do alter that arrangement...specifically for enhanced airflow..and a different sound than "Cajun"
I think the physical arrangement is as Larry says, for most cajun boxes. The progressive octave arrangement is LMMH.
I know that on my Hohner it is LMMH (back to front)
I assumed Cajun accordions were set up the same.
My Regal is MMLH.