Number

Sursurunga is famous for having a five-way grammatical number

Grammatical number

In linguistics, grammatical number is a grammatical category of nouns, pronouns, and adjective and verb agreement that expresses count distinctions ....

 distinction. The numbers beside singular, dual

Dual number

In linear algebra, the dual numbers extend the real numbers by adjoining one new element ε with the property ε2 = 0 . The collection of dual numbers forms a particular two-dimensional commutative unital associative algebra over the real numbers. Every dual number has the form z = a + bε with a and...

, and plural have been called trial and quadral (Hutchisson 1986); however, these numbers, which only occur on pronouns, indicate a minimum of three and four, not exactly three and four the way the dual indicates exactly two. They are equivalent to "a few" and "several", and Corbett has called them (lesser) paucal and greater paucal. The trial cannot be used for dyadic kinship term

Dyadic kinship term

Dyadic kinship terms are kinship terms in a few languages that express the relationship between individuals as they relate one to the other...

s, whereas the quadral is used for two or three such pair relationships.