«du»

[uakci]

Now that the JEO frame (0; c 1) is on indefinite leave, du is torn apart between its two main usage patterns:

• As c 1, and therefore as the head of a serial (du duao ní nam) or an ıq-style cleft (du ní nam, lä duao já). (I'm a fan of this option personally, even if it means that you have to go like du faq ꝡä ….)
• As 0, and therefore as a type-2 adverb in Gamma (**dũ bı …*). Sadly this breaks in Delta, which gets rid of the very concept of type-2 adverbs.

@robintown suggests du may be a modal now, see #150 (comment).

(What kind of modal? Mod, Σ, or something else entirely? Also I'm not so sure about analyzing too many verbs as being modals, since that could easily lead to them becoming an open class, which feels a little weird to me I guess. Maybe it doesn't matter.)

I think the answer to this question should be delayed until we learn for sure if 0 frames are Gone For Real.