Declension table of ?yantrarahasya

Neuter	Singular	Dual	Plural
Nominative	yantrarahasyam	yantrarahasye	yantrarahasyāni
Vocative	yantrarahasya	yantrarahasye	yantrarahasyāni
Accusative	yantrarahasyam	yantrarahasye	yantrarahasyāni
Instrumental	yantrarahasyena	yantrarahasyābhyām	yantrarahasyaiḥ
Dative	yantrarahasyāya	yantrarahasyābhyām	yantrarahasyebhyaḥ
Ablative	yantrarahasyāt	yantrarahasyābhyām	yantrarahasyebhyaḥ
Genitive	yantrarahasyasya	yantrarahasyayoḥ	yantrarahasyānām
Locative	yantrarahasye	yantrarahasyayoḥ	yantrarahasyeṣu

Compound yantrarahasya -

Adverb -yantrarahasyam -yantrarahasyāt