From lab6:
* Create complementizer entries for all complementizer verbs.
* Get 'az' working.
* Get tsi interrogatives working 
* NP predicates
* fix predicative PP, see below: 

Lab 6 from Emily:

Source: author
Vetted: f
Judgment: g
Phenomena: {cop}
Der man iz unter dos hoyz.
Der man iz unter dos hoyz.
DEF.SG.NOM.M man COP under DEF.SG.ACC.N house.
The man is under the house.

EB> And none of them is correct, as the P picks up the
D separate from the N/NP.


General TODOs:
* what's with ton in the singulative section of test suite.
* hook habitual ton aux up to inflection
* make unmarked sentences be constrained for aspect - add ton again
* conjugation is completely and utterly not working
* add aux + adv + PP etc examples to testsuite
* ze ikh gut | still getting two parses, rules can apply in either order.
* AUXs are not specifying form of aux verb
* prevent adjective + pronoun: eg "Gut-e Ikh zing"
* der man zing-t nit | has two parses
* ADV + VSO / VSO + ADV | has two parses
  - gut ze Ikh dem man
* find example of V aux in interrogative, then implement 
* looks like the -t in the PP is squeezing through without ge-
* Seperates lex-types into `le_types.tdl`.
* Not getting SPECI for a sentence... which one??

Low priority
* abstract away agreement constraint patterns from irregular verbs etc
* are VOS interrogatives grammatical?
* get case on nouns working
* figure out neuter definite vs absolutive
