This can be seen in the following analyses for the words "munankičis" and "munankičisñaču" (root verb "muna" "want, desire"), where stress has been numbered below:  Rare exceptions exist where the final syllable of the word carries the primary stress, such as in "ari" "yes". There also exist some 'emotive' suffixes in the language that are always stressed, resulting in stress on the last syllable of the word. Stress on the final syllable can also occur through the dropping of some single-syllable suffixes (for instance, the yes/no question marker "-chu") without a subsequent shifting of the stress. South Bolivian Quechua is an agglutinative, polysynthetic language with a rich derivational morphology, allowing the language to convey a large amount of information in a single word. As a result of this, words in South Bolivian Quechua can be very long. Words in the language are purely suffixal; no other types of affixes are used. These suffixes are also highly regular, with alternations generally only occurring to maintain syllable structure. Morphemes within a word are ordered as follows:   South Bolivian Quechua has many clearly derivational suffixes, where a noun, verb, or adjective is derived from a different lexical category. The following are a few examples:  "Note:" -y "is the verb infinitive marker." Other suffixes are less clearly categorized as derivational or inflectional, including some aspectual suffixes as well as a class of suffixes termed “auxiliary”. For example, the causative suffix ‘’-chi’’ may seem straightforwardly inflectional in some instances:   But in other cases it can be derivational:   There are several categories of verbal suffixes in South Bolivian Quechua. These include modal suffixes, object markers, tense and aspect markers, and person markers. South Bolivian Quechua has a great amount of modal suffixes that are used to express a range of concepts. Some examples include:   Some of these modal suffixes can be derivational if used with a non-verb—for example, "-naya" and "-na". Person markers differentiate between first, second, and third persons and plurality, as well as an inclusive and exclusive first person plural.