For example, Paumarí use Portuguese narrative words such as dai ("from there") and então ("then") often in their speech. Also, Paumarí have difficulty expressing equality/inequality within their own language. At the time of the 1964 SIL arrival, they used the Portuguese word mais ("more") in conjunction with adjectives to compare things and the researchers could not find anything in native Paumarí tongue that served the same function in their language. Often, root duplication serves as a way for the Paumarí to express that something is less like or becoming or trending towards another thing. This is an odd use of reduplication, as in many other languages, reduplication serves to strengthen the word; make it more immediate or intense. For adjectives, often the suffix –ki will be added to tag the word as descriptive. Reduplication of adjective roots denotes less of the description. Stress accent system Dan Everett of the University of North Dakota has extensively studied the accent/stress system of the Paumarí and has claimed that the Paumarí’s accent system violates some of the most basic theories put forward by linguists with regards to stress systems. Paumarí has iambic feet, which means the accent tends towards the right, or latter, portion of the word or syllable set, and they are not weight-sensitive. Everett theorizes that stress placement and syllables in the Paumarí language are more exclusive from one another than many modern theories believe. Two types of accents are distinguished in Paumarí, primary stress and secondary stress. Primary stress is characterized by a sharp increase in intensity (volume) and by somewhat higher pitch, although the latter is difficult for non-speakers to distinguish and was found by digital analysis of sound wave of native speakers. Secondary stress in Paumarí is characterized by a slight increase in intensity and often an increase in syllable duration. The final syllable of a word always has one of the two of these and therefore is always somewhat stressed. The stress system starts at the final syllable and works its way to the left, or the beginning of the word, skipping every other syllable. In disyllabic words, the primary stress is placed on the final syllable. In polysyllabic words, the primary stress is assigned to the antepenult (third from last) syllable, and the last syllable is assigned secondary stress. If the polysyllabic word is five syllables or more, every odd syllable (leftward) from the antepenult syllable