Monumbo is a Papuan language of Papua New Guinea.
Mambuwan consonants are:[3] Mambuwan vowels are:[3] Monumbo distinguishes five gender classes for singular and dual third-person pronouns, but only two gender classes (masculine and feminine) for third-person plural pronouns, a typologically unusual feature.
There are five genders for the third-person pronoun, which are masculine, feminine, neutral, diminutive, and miscellaneous genders.
[3] Mambuwan subject agreement prefixes are:[3] Mambuwan has a general oblique case marker –unum ~ -Cusum for nouns:[3] Mambuwan also makes use of postpositions such as ŋaŋ ‘inside’:[3] Mambuwan has highly complex verbal inflection.
[3] Some Mambuwan nouns and their respective plural forms:[3]