Declension table of ?tṛṇapuruṣaka

Masculine	Singular	Dual	Plural
Nominative	tṛṇapuruṣakaḥ	tṛṇapuruṣakau	tṛṇapuruṣakāḥ
Vocative	tṛṇapuruṣaka	tṛṇapuruṣakau	tṛṇapuruṣakāḥ
Accusative	tṛṇapuruṣakam	tṛṇapuruṣakau	tṛṇapuruṣakān
Instrumental	tṛṇapuruṣakeṇa	tṛṇapuruṣakābhyām	tṛṇapuruṣakaiḥ tṛṇapuruṣakebhiḥ
Dative	tṛṇapuruṣakāya	tṛṇapuruṣakābhyām	tṛṇapuruṣakebhyaḥ
Ablative	tṛṇapuruṣakāt	tṛṇapuruṣakābhyām	tṛṇapuruṣakebhyaḥ
Genitive	tṛṇapuruṣakasya	tṛṇapuruṣakayoḥ	tṛṇapuruṣakāṇām
Locative	tṛṇapuruṣake	tṛṇapuruṣakayoḥ	tṛṇapuruṣakeṣu

Compound tṛṇapuruṣaka -

Adverb -tṛṇapuruṣakam -tṛṇapuruṣakāt