16. feminine stems ending in -r (paradigm matr-, mother):
 
  Sg. Du. Pl.
Nom. mata matarau matarah
Acc. mataram matarau matfh
Ins. matra matrbhyam matrbhih
Dat. matre matrbhyam matrbhyah
Abl. matuh matrbhyam matrbhyah
Gen. matuh matroh matfnam
Loc. matari matroh matrsu
Voc. matar matarau matarah