Declension table of ?oṣṭhaka

Neuter	Singular	Dual	Plural
Nominative	oṣṭhakam	oṣṭhake	oṣṭhakāni
Vocative	oṣṭhaka	oṣṭhake	oṣṭhakāni
Accusative	oṣṭhakam	oṣṭhake	oṣṭhakāni
Instrumental	oṣṭhakena	oṣṭhakābhyām	oṣṭhakaiḥ
Dative	oṣṭhakāya	oṣṭhakābhyām	oṣṭhakebhyaḥ
Ablative	oṣṭhakāt	oṣṭhakābhyām	oṣṭhakebhyaḥ
Genitive	oṣṭhakasya	oṣṭhakayoḥ	oṣṭhakānām
Locative	oṣṭhake	oṣṭhakayoḥ	oṣṭhakeṣu

Compound oṣṭhaka -

Adverb -oṣṭhakam -oṣṭhakāt