12, No.

29, No.

39 (here the _da capo_ is considerably changed).
In No.

37 the "subordinate song" is represented by no more than a brief Interlude (measures 33-40) between the principal song and its recurrence,--just sufficient to provide an occasion for the latter (which, by the way, is also abbreviated).
Mozart, pianoforte sonatas: No.

2, _Andante cantabile_; each song-form has two Parts; the subordinate song changes into the minor.
No.