I liked this piece, its organization and general concise nature really made it easy to identify the rondo form. There are seven different parts to the form and they are easily recognizable in the divisions and transitions that Couperin created.
The A theme begins in B-flat major, I really like the mordents btw, I'm I fan of the ornamentation. There is kind of an antecedent\consequent phrase that is repeated and then at measure 8 we get new material with a HC in mm.11 and then the repeat. The A theme comes back in mm.12 and ends like it did originally in mm.7 with a PAC. In mm.20, what looks like it could be the B theme again comes back but it turns into something new, the C material. Things change in mm.22 with the eighth note passage in the second half of the measure and continue on as the tonality shifts a little bit, to g minor I think, and there is a PAC in g minor in measure 28 as that section ends, at the end of the measure there is an ellision where the A theme comes back into the picture and ends in the original key, with another PAC in mm.36.
What I kind of feel like is the terminative section begins in mm. 36 and this transition\termination extends to measure 50 where there is another ellision and return to the A theme in the original key. It ends, of course on a PAC in the original key of B-flat, making it tonally closed as well.