Declension table of ?kārṣya

Masculine	Singular	Dual	Plural
Nominative	kārṣyaḥ	kārṣyau	kārṣyāḥ
Vocative	kārṣya	kārṣyau	kārṣyāḥ
Accusative	kārṣyam	kārṣyau	kārṣyān
Instrumental	kārṣyeṇa	kārṣyābhyām	kārṣyaiḥ kārṣyebhiḥ
Dative	kārṣyāya	kārṣyābhyām	kārṣyebhyaḥ
Ablative	kārṣyāt	kārṣyābhyām	kārṣyebhyaḥ
Genitive	kārṣyasya	kārṣyayoḥ	kārṣyāṇām
Locative	kārṣye	kārṣyayoḥ	kārṣyeṣu

Compound kārṣya -

Adverb -kārṣyam -kārṣyāt