Declension table of ?sahakartṛ

Masculine	Singular	Dual	Plural
Nominative	sahakartā	sahakartārau	sahakartāraḥ
Vocative	sahakartaḥ	sahakartārau	sahakartāraḥ
Accusative	sahakartāram	sahakartārau	sahakartṝn
Instrumental	sahakartrā	sahakartṛbhyām	sahakartṛbhiḥ
Dative	sahakartre	sahakartṛbhyām	sahakartṛbhyaḥ
Ablative	sahakartuḥ	sahakartṛbhyām	sahakartṛbhyaḥ
Genitive	sahakartuḥ	sahakartroḥ	sahakartṝṇām
Locative	sahakartari	sahakartroḥ	sahakartṛṣu

Compound sahakartṛ -

Adverb -sahakartṛ