Declension table of ?ṣaṣṭivarṣin

Neuter	Singular	Dual	Plural
Nominative	ṣaṣṭivarṣi	ṣaṣṭivarṣiṇī	ṣaṣṭivarṣīṇi
Vocative	ṣaṣṭivarṣin ṣaṣṭivarṣi	ṣaṣṭivarṣiṇī	ṣaṣṭivarṣīṇi
Accusative	ṣaṣṭivarṣi	ṣaṣṭivarṣiṇī	ṣaṣṭivarṣīṇi
Instrumental	ṣaṣṭivarṣiṇā	ṣaṣṭivarṣibhyām	ṣaṣṭivarṣibhiḥ
Dative	ṣaṣṭivarṣiṇe	ṣaṣṭivarṣibhyām	ṣaṣṭivarṣibhyaḥ
Ablative	ṣaṣṭivarṣiṇaḥ	ṣaṣṭivarṣibhyām	ṣaṣṭivarṣibhyaḥ
Genitive	ṣaṣṭivarṣiṇaḥ	ṣaṣṭivarṣiṇoḥ	ṣaṣṭivarṣiṇām
Locative	ṣaṣṭivarṣiṇi	ṣaṣṭivarṣiṇoḥ	ṣaṣṭivarṣiṣu

Compound ṣaṣṭivarṣi -

Adverb -ṣaṣṭivarṣi