[ :Motive-|-Motive--|-Motive-----|--|-Motive---|--|-Motive----|---]
[2/4: 4 8 8 | 8. 16 4 | 8 8 8 8 | 4 4 | 4 8 8 | 4 4 | 8. 16 8 8 | 2 ]
[ :------Phrase-----|----Phrase-----|---Phrase----|----Phrase-----]
[A phrase may be three or four measures, and sections may be unequal]
[ :-------------Section-------------|-----------Section-----------]
[ :------------------------------Period---------------------------]
This period might be repeated or extended to sixteen measures
and still remain a period.
1. |--I P.-|--II P.-| (II is generally longer than I)
2. |---I---|---II---|--I--|
3. |---I---|---II---|-III-| (generally III resembles I)
4. |---I---|---II---|-III-|--I--|--II-| or |--I--|--II--|-III-|--I--|
5. |---I---|---II---|-III-|--IV-|
6. |---I---|---II---|-III-|--IV-|--I--|--II-|
7. |---I---|---II---|--I--|-III-|--IV-|-III-|--I--|--II--|--I--|
In all these forms each period may be repeated.
Often the first, third, and fourth periods are repeated,
leaving the second period as it is. This happens especially
when the second period is longer than the first. In Nos. 2,
4, 6, 7, a few bars are often added at _Fine_ as a coda.