Declension table of ?protaghana

Neuter	Singular	Dual	Plural
Nominative	protaghanam	protaghane	protaghanāni
Vocative	protaghana	protaghane	protaghanāni
Accusative	protaghanam	protaghane	protaghanāni
Instrumental	protaghanena	protaghanābhyām	protaghanaiḥ
Dative	protaghanāya	protaghanābhyām	protaghanebhyaḥ
Ablative	protaghanāt	protaghanābhyām	protaghanebhyaḥ
Genitive	protaghanasya	protaghanayoḥ	protaghanānām
Locative	protaghane	protaghanayoḥ	protaghaneṣu

Compound protaghana -

Adverb -protaghanam -protaghanāt