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"postari" 
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| (animate noun) declension |  |
 
|  | indefinite | singular | plural |  
| absolutive | postari | postaria | postariak |  
| ergative | postarik | postariak | postariek |  
| dative | postariri | postariari | postariei |  
| genitive | postariren | postariaren | postarien |  
| comitative | postarirekin | postariarekin | postariekin |  
| causative | postarirengatik | postariarengatik | postariengatik |  
| benefactive | postarirentzat | postariarentzat | postarientzat |  
| instrumental | postariz | postariaz | postariez |  
| inessive | postarirengan | postariarengan | postariengan |  
| allative | postarirengana | postariarengana | postariengana |  
| terminative | postarirenganaino | postariarenganaino | postarienganaino |  
| directive | postarirenganantz | postariarenganantz | postarienganantz |  
| destinative | postarirenganako | postariarenganako | postarienganako |  
| ablative | postarirengandik | postariarengandik | postariengandik |  
| partitive | postaririk | - | - |  
| prolative | postaritzat | - | - |  | 
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