There are three strains, each closed tonally (the first and the third in Eb, the second in Bb). This design is exceedingly common in music meant for dancing; it can be found in published contredanses from the mid-18th century onward, and throughout much of the 19th century it remained the basis of the varying designs for the five numbers of the quadrille.
This design is maximally flexible yet practical. From it one can easily get nearly 2 minutes of music, assuming a bar per second and the most common ABACA realization with all strains repeated (btw, this is the version used in "Pantalon," the first number in the quadrille) . Making it seven parts--ABACABA--offers up to three minutes, plenty for an individual dance (it's used in "Poule," the third part of the quadrille).
I have written about these flexible designs in this blog post: link.
My Schubert blog has a series on forms "with refrains": link; link; link; link; link.
