Case hierarchy
From Infogalactic: the planetary knowledge core
In linguistic typology, the case hierarchy states grammatical cases in order of their prominence. It should therefore be concluded that a language which makes use of any given case will also make use of all the cases which are higher (further left) on the hierarchy.
An example hierarchy
The following example shows a basic hierarchy for a language with a nominative–accusative alignment.
nominative=>accusative=>genitive=>dative=>instrumental=>prepositional
