Declension table of ?tarpin

Neuter	Singular	Dual	Plural
Nominative	tarpi	tarpiṇī	tarpīṇi
Vocative	tarpin tarpi	tarpiṇī	tarpīṇi
Accusative	tarpi	tarpiṇī	tarpīṇi
Instrumental	tarpiṇā	tarpibhyām	tarpibhiḥ
Dative	tarpiṇe	tarpibhyām	tarpibhyaḥ
Ablative	tarpiṇaḥ	tarpibhyām	tarpibhyaḥ
Genitive	tarpiṇaḥ	tarpiṇoḥ	tarpiṇām
Locative	tarpiṇi	tarpiṇoḥ	tarpiṣu

Compound tarpi -

Adverb -tarpi