Nov04 Aspect

Dynamic verbs have 4 aspects. Perfective is unmarked, while progressive, retrospective, and prospective are marked by prefixes (although I'm not sure whether these go before or after the passive prefixes). The retrospective is limited to the "perfect of result"; the prospective is similarly limited. The experiential perfect is expressed using the past perfective with an adverb (something like "sometimes"); the same adverb is used with the future perfective to express eventual futures. The past and future habitual are expressed similarly, but the adverb is one with pluractional meaning. Otherwise, the past and future perfective are often used with adverbs specifying some definite time.

PRS RET-P1-break DEF glass. "The glass is broken."
PST P1-break DEF glass. "The glass broke."
PST P1-break sometimes DEF glass. "The glass has broken before."
PST P1-break pluractional DEF glass. "The glass used to get broken."

Static verbs have 3 aspects: stative is unmarked, while retrospective and prospective (which have only occasional use here) are marked by prefixes as above. The stative can be used with temporal adverbs, like the perfective aspect.