Declension table of ṛtvij

Masculine	Singular	Dual	Plural
Nominative	ṛtvik	ṛtvijau	ṛtvijaḥ
Vocative	ṛtvik	ṛtvijau	ṛtvijaḥ
Accusative	ṛtvijam	ṛtvijau	ṛtvijaḥ
Instrumental	ṛtvijā	ṛtvigbhyām	ṛtvigbhiḥ
Dative	ṛtvije	ṛtvigbhyām	ṛtvigbhyaḥ
Ablative	ṛtvijaḥ	ṛtvigbhyām	ṛtvigbhyaḥ
Genitive	ṛtvijaḥ	ṛtvijoḥ	ṛtvijām
Locative	ṛtviji	ṛtvijoḥ	ṛtvikṣu

Compound ṛtvik -

Adverb -ṛtvik