A Canon after Mozart

Today, while sight reading Mozart's Piano Sonata in c minor (K. 457), I noticed a little canon at the beginning of the coda to the first movement. It's only a few measures long and descends harmonically in thirds from I to VI to viiº7/V.

Here's an excerpt:
(click on image to enlarge)


I decided to pattern my entry for today after this Mozart model but to carry it on for several more measures. Mine descends in thirds fro I to VI to IV to N (the Neapolitan chord -- bII then cadences -- viiº7/V -- I 6/4 -- V7 -- I.

It is a canon at the fifteenth until measure 7 and then contracts to an octave for m. 7-8.

(click on image to enlarge)