Declension table of ?triḥsapta

Neuter	Singular	Dual	Plural
Nominative	triḥsaptam	triḥsapte	triḥsaptāni
Vocative	triḥsapta	triḥsapte	triḥsaptāni
Accusative	triḥsaptam	triḥsapte	triḥsaptāni
Instrumental	triḥsaptena	triḥsaptābhyām	triḥsaptaiḥ
Dative	triḥsaptāya	triḥsaptābhyām	triḥsaptebhyaḥ
Ablative	triḥsaptāt	triḥsaptābhyām	triḥsaptebhyaḥ
Genitive	triḥsaptasya	triḥsaptayoḥ	triḥsaptānām
Locative	triḥsapte	triḥsaptayoḥ	triḥsapteṣu

Compound triḥsapta -

Adverb -triḥsaptam -triḥsaptāt