Declension table of ?triṣaṃvatsara

Neuter	Singular	Dual	Plural
Nominative	triṣaṃvatsaram	triṣaṃvatsare	triṣaṃvatsarāṇi
Vocative	triṣaṃvatsara	triṣaṃvatsare	triṣaṃvatsarāṇi
Accusative	triṣaṃvatsaram	triṣaṃvatsare	triṣaṃvatsarāṇi
Instrumental	triṣaṃvatsareṇa	triṣaṃvatsarābhyām	triṣaṃvatsaraiḥ
Dative	triṣaṃvatsarāya	triṣaṃvatsarābhyām	triṣaṃvatsarebhyaḥ
Ablative	triṣaṃvatsarāt	triṣaṃvatsarābhyām	triṣaṃvatsarebhyaḥ
Genitive	triṣaṃvatsarasya	triṣaṃvatsarayoḥ	triṣaṃvatsarāṇām
Locative	triṣaṃvatsare	triṣaṃvatsarayoḥ	triṣaṃvatsareṣu

Compound triṣaṃvatsara -

Adverb -triṣaṃvatsaram -triṣaṃvatsarāt