Declension table of ?tṛṇapa

Masculine	Singular	Dual	Plural
Nominative	tṛṇapaḥ	tṛṇapau	tṛṇapāḥ
Vocative	tṛṇapa	tṛṇapau	tṛṇapāḥ
Accusative	tṛṇapam	tṛṇapau	tṛṇapān
Instrumental	tṛṇapena	tṛṇapābhyām	tṛṇapaiḥ tṛṇapebhiḥ
Dative	tṛṇapāya	tṛṇapābhyām	tṛṇapebhyaḥ
Ablative	tṛṇapāt	tṛṇapābhyām	tṛṇapebhyaḥ
Genitive	tṛṇapasya	tṛṇapayoḥ	tṛṇapānām
Locative	tṛṇape	tṛṇapayoḥ	tṛṇapeṣu

Compound tṛṇapa -

Adverb -tṛṇapam -tṛṇapāt