... attach to nouns and adjectives in a givenlanguage only if they also attach to verbs. This follows from the fact that verbs are structurally closer to tense than predicative nouns and adjectives ... –cha, and –chi appears on verbs, nouns, and adjectives (although less productivelyon the latter).18Such cases blunt the sharpness of almost all morphologicalgeneralizations. On the other hand, ... past, conditional, and inferential) attach directly to nouns and adjectives as well as to verbs in this language, whereas the others (continua-tive, aorist, future, necessitive, and optative) need...