kartŗ   doer  

                            Singular                  dual                  Plural

 

                           kartā                     katārau                  kartāras

                           kartāram                                            kartŗŗn

                           kartrā                 kartŗbhyām               kartŗbhis

                           kartre                                                 kartŗbhyas

                           kartus                                                       

                                                       katro:                     kartŗŗṇām

                           kartari                                                kartŗṣu

                                       

                                ---

                              kartar 

                 --------------------------------------------------------

    Vedic

                  pita                     pitarāu                    pitaras

                  pitaram                                            pitṛṛn

                  pitrā                   pitṛbhyām                pitṛbhis

                  pitrai                                                pitṛbhyas

                  pitur                                                      

                                            pitraus                    pitṛṛṇām

                  pitari                                                 pitṛṣu

                             =====

                  pitar                     pitarāu                      pitaras