Sursurunga is an Oceanic language of New Ireland.
Sursurunga has fifteen consonants—⟨b d g h k l m n ng p r s t w y⟩— and six vowels—⟨a á e i o u⟩.
[11] Sursurunga is famous for having a five-way grammatical number distinction.
The numbers beside singular, dual, and plural have been called trial and quadral;[12] 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.
The trial cannot be used for dyadic kinship terms, whereas the quadral is used for two or three such pair relationships.