The Sakha language/Nouns

Plurals
Unlike Turkish and other many Turkic languages, Sakha has more irregular plurals than its sisters. For example, English has irregular plural forms man — men, person — people, or child — children. Regular plurals in Sakha are formed by the surface form -ЛАр. These are the assimilated forms of this suffix: In addition, there is also numerous irregular plurals in Sakha:

Accusative
The accusative case are used as a direct object (I see the car) of a verb or certain prepositions of verbal origin. While the divisions of the surface form -(н)И are somewhat simple, but the treatment of stems of nouns ending in a consonant is rather complex. Nouns ending in -с and -х usually change to -һ and -ҕ, respectively (nom. бас — acc. баһы "head"). However, nouns ending in -CVC (-C- = consonants, -V- = short close vowel) are elided to -CC- (also before other suffixes starting with a consonant) causing -һ and -ҕ devoices to -с and -х before other consonants.

In addition, there is also an accusative-collective case, used for denoting a completely-affected object (сирэйдэри "whole face"). Its formation is completely the same as accusative plural, but this case only exists in singular so there is no such forms like **сирэйдэрдэри.