Declension table of ?kartya

Neuter	Singular	Dual	Plural
Nominative	kartyam	kartye	kartyāni
Vocative	kartya	kartye	kartyāni
Accusative	kartyam	kartye	kartyāni
Instrumental	kartyena	kartyābhyām	kartyaiḥ
Dative	kartyāya	kartyābhyām	kartyebhyaḥ
Ablative	kartyāt	kartyābhyām	kartyebhyaḥ
Genitive	kartyasya	kartyayoḥ	kartyānām
Locative	kartye	kartyayoḥ	kartyeṣu

Compound kartya -

Adverb -kartyam -kartyāt