Declension table of ?siddhiyogya

Masculine	Singular	Dual	Plural
Nominative	siddhiyogyaḥ	siddhiyogyau	siddhiyogyāḥ
Vocative	siddhiyogya	siddhiyogyau	siddhiyogyāḥ
Accusative	siddhiyogyam	siddhiyogyau	siddhiyogyān
Instrumental	siddhiyogyena	siddhiyogyābhyām	siddhiyogyaiḥ siddhiyogyebhiḥ
Dative	siddhiyogyāya	siddhiyogyābhyām	siddhiyogyebhyaḥ
Ablative	siddhiyogyāt	siddhiyogyābhyām	siddhiyogyebhyaḥ
Genitive	siddhiyogyasya	siddhiyogyayoḥ	siddhiyogyānām
Locative	siddhiyogye	siddhiyogyayoḥ	siddhiyogyeṣu

Compound siddhiyogya -

Adverb -siddhiyogyam -siddhiyogyāt