Case markers often distinguish between the various arguments of a predicate, such as the Agent and Patient. Three basic types of arguments are generally distinguished: the subject of a transitive clause, the object of a transitive clause, and the subject of an intransitive clause.

<br><br>Many languages use suffixes to express these case markings.  Consider the following example from Tsova-Tush:

<br><br><i>Lek’-i-<b>v</b> že Dik’-e-r</i> 'Lek-PL-<b>ERG</b> sheep take.away-AOR-PST' for "The Leki would take away sheep." 

<br><br><b>Reference</b><br>
Dryer, Matthew S.. 2008. Position of Case Affixes.
In Haspelmath et al (2008), chapter 51. Available online at <a href="http://wals.info/feature/51">
http://wals.info/feature/51</a href>.
