Declension table of yantrin

Masculine	Singular	Dual	Plural
Nominative	yantrī	yantriṇau	yantriṇaḥ
Vocative	yantrin	yantriṇau	yantriṇaḥ
Accusative	yantriṇam	yantriṇau	yantriṇaḥ
Instrumental	yantriṇā	yantribhyām	yantribhiḥ
Dative	yantriṇe	yantribhyām	yantribhyaḥ
Ablative	yantriṇaḥ	yantribhyām	yantribhyaḥ
Genitive	yantriṇaḥ	yantriṇoḥ	yantriṇām
Locative	yantriṇi	yantriṇoḥ	yantriṣu

Compound yantri -

Adverb -yantri