Declension table of ?tryahna

Neuter	Singular	Dual	Plural
Nominative	tryahnam	tryahne	tryahnāni
Vocative	tryahna	tryahne	tryahnāni
Accusative	tryahnam	tryahne	tryahnāni
Instrumental	tryahnena	tryahnābhyām	tryahnaiḥ
Dative	tryahnāya	tryahnābhyām	tryahnebhyaḥ
Ablative	tryahnāt	tryahnābhyām	tryahnebhyaḥ
Genitive	tryahnasya	tryahnayoḥ	tryahnānām
Locative	tryahne	tryahnayoḥ	tryahneṣu

Compound tryahna -

Adverb -tryahnam -tryahnāt