Thirds and sixths together.
Apart from the obvious distribution:
| Fl. Ob. Cl. | or | Ob. Cl. Fag., |
there are certain complicated methods which involve doubling:
| Upper | part. | Ob. + Fl. |
| Middle | " | Fl. + Cl. |
| Lower | " | Ob. + Cl. |
The following is a complex instance somewhat vague in character:
[No. 69.] Legend of Kitesh 35—
| Ob. Ob. + Cl. Cl. | and | Fl. Fl. + Ob. Ob. |