Declension table of ?kauṣṭhika

Masculine	Singular	Dual	Plural
Nominative	kauṣṭhikaḥ	kauṣṭhikau	kauṣṭhikāḥ
Vocative	kauṣṭhika	kauṣṭhikau	kauṣṭhikāḥ
Accusative	kauṣṭhikam	kauṣṭhikau	kauṣṭhikān
Instrumental	kauṣṭhikena	kauṣṭhikābhyām	kauṣṭhikaiḥ kauṣṭhikebhiḥ
Dative	kauṣṭhikāya	kauṣṭhikābhyām	kauṣṭhikebhyaḥ
Ablative	kauṣṭhikāt	kauṣṭhikābhyām	kauṣṭhikebhyaḥ
Genitive	kauṣṭhikasya	kauṣṭhikayoḥ	kauṣṭhikānām
Locative	kauṣṭhike	kauṣṭhikayoḥ	kauṣṭhikeṣu

Compound kauṣṭhika -

Adverb -kauṣṭhikam -kauṣṭhikāt