Declension table of ?kāṣṭhakūṭa

Masculine	Singular	Dual	Plural
Nominative	kāṣṭhakūṭaḥ	kāṣṭhakūṭau	kāṣṭhakūṭāḥ
Vocative	kāṣṭhakūṭa	kāṣṭhakūṭau	kāṣṭhakūṭāḥ
Accusative	kāṣṭhakūṭam	kāṣṭhakūṭau	kāṣṭhakūṭān
Instrumental	kāṣṭhakūṭena	kāṣṭhakūṭābhyām	kāṣṭhakūṭaiḥ kāṣṭhakūṭebhiḥ
Dative	kāṣṭhakūṭāya	kāṣṭhakūṭābhyām	kāṣṭhakūṭebhyaḥ
Ablative	kāṣṭhakūṭāt	kāṣṭhakūṭābhyām	kāṣṭhakūṭebhyaḥ
Genitive	kāṣṭhakūṭasya	kāṣṭhakūṭayoḥ	kāṣṭhakūṭānām
Locative	kāṣṭhakūṭe	kāṣṭhakūṭayoḥ	kāṣṭhakūṭeṣu

Compound kāṣṭhakūṭa -

Adverb -kāṣṭhakūṭam -kāṣṭhakūṭāt