Declension table of ?kartu

Masculine	Singular	Dual	Plural
Nominative	kartuḥ	kartū	kartavaḥ
Vocative	karto	kartū	kartavaḥ
Accusative	kartum	kartū	kartūn
Instrumental	kartunā	kartubhyām	kartubhiḥ
Dative	kartave	kartubhyām	kartubhyaḥ
Ablative	kartoḥ	kartubhyām	kartubhyaḥ
Genitive	kartoḥ	kartvoḥ	kartūnām
Locative	kartau	kartvoḥ	kartuṣu

Compound kartu -

Adverb -kartu