Declension table of ?ṣaṣṭivarṣin

Masculine	Singular	Dual	Plural
Nominative	ṣaṣṭivarṣī	ṣaṣṭivarṣiṇau	ṣaṣṭivarṣiṇaḥ
Vocative	ṣaṣṭivarṣin	ṣaṣṭivarṣiṇau	ṣaṣṭivarṣiṇaḥ
Accusative	ṣaṣṭivarṣiṇam	ṣaṣṭivarṣiṇau	ṣaṣṭivarṣiṇaḥ
Instrumental	ṣaṣṭivarṣiṇā	ṣaṣṭivarṣibhyām	ṣaṣṭivarṣibhiḥ
Dative	ṣaṣṭivarṣiṇe	ṣaṣṭivarṣibhyām	ṣaṣṭivarṣibhyaḥ
Ablative	ṣaṣṭivarṣiṇaḥ	ṣaṣṭivarṣibhyām	ṣaṣṭivarṣibhyaḥ
Genitive	ṣaṣṭivarṣiṇaḥ	ṣaṣṭivarṣiṇoḥ	ṣaṣṭivarṣiṇām
Locative	ṣaṣṭivarṣiṇi	ṣaṣṭivarṣiṇoḥ	ṣaṣṭivarṣiṣu

Compound ṣaṣṭivarṣi -

Adverb -ṣaṣṭivarṣi