Declension table of ?ekaputraka

Masculine	Singular	Dual	Plural
Nominative	ekaputrakaḥ	ekaputrakau	ekaputrakāḥ
Vocative	ekaputraka	ekaputrakau	ekaputrakāḥ
Accusative	ekaputrakam	ekaputrakau	ekaputrakān
Instrumental	ekaputrakeṇa	ekaputrakābhyām	ekaputrakaiḥ ekaputrakebhiḥ
Dative	ekaputrakāya	ekaputrakābhyām	ekaputrakebhyaḥ
Ablative	ekaputrakāt	ekaputrakābhyām	ekaputrakebhyaḥ
Genitive	ekaputrakasya	ekaputrakayoḥ	ekaputrakāṇām
Locative	ekaputrake	ekaputrakayoḥ	ekaputrakeṣu

Compound ekaputraka -

Adverb -ekaputrakam -ekaputrakāt